I felt a bump on my lower back that doubled in size over a few weeks. I have bad back pain when I sit which until finding the lump I put down to bad posture. 
After coming here to check what others say. Worrying, worrying more I finally went to the docs. Due to covid I could only get a telephone appointment. The first thing the doc said to me is there is no lymph nodes in the area of the small of back. I struggled to find that information online. Sure it tells you you can feel them on the back of your neck when you type it into the google but couldn't find anything on back. So anyone with the same worry as me I hope this helps a little. After that the doctor just said to leave the lump alone and revisit it in a few months. 
I asked to be referred to a private doctor at the local hospital as I wanted someone to actually look at me. At the hospital again the first thing the doctor/surgeon said was there is no lymph nodes there. Then after inspection he told me I was just fat. A Lipoma. I am probably 1 stone over weight so I am no way fat. I hope this again shows that you don't need to be fat to get a lipoma. The reason I wanted to post this here is I googled loads before the doctors and had myself worried sick. We all know we shouldn't but we do. However I very rarely see people coming back on their previous comments once they've finally been told what their lump or symptom is. So just wanted to say that my lump was harmless but caused me so much anxiety. My back pain has also pretty much disappeared as I'm no longer thinking of it 24/7

Thanks for your post. It almost exactly describes my lump, I also low back pain when sitting just now! I think I'll moniter it for a few weeks and see what it does. (I also have a large lipoma on my shoulder so must be prone to them) 

No scans or nothing. He knew as soon as he moved it about. Yea mines was a little bit painful if I kept moving it about. I checked it every 5 minutes lol. 
Get yourself booked to go and get it checked and make yourself feel so much better 

What did he say when he felt it ? Did part of yours ever feel like it didn't move much at one side compared to other or did it all move freely

Mines moved from right to left up and down but not left to right. So I had myself convinced it was growing from something that couldn't be moved. As soon as he felt it he knew it was a lipoma. Yours sounds mega like mine. 
I also have one at my wrist now but as it's not noticeable and causes no pain I will leave it 

ha u sound like me i touch it everytime and reckon thats why its hurting . i will deffo get it removed as dont like it at all my gp isnt concerned at all i send him pics when i found it as was lockdown send him several picture and said if he is worried he will get back to me but from what it sounds is like lipoma fat tissue . But as said i dont like it and deffo get it removed i was worried aswell it could be lymphnode but he was laughing and said i would be someting special if have lymphnodes theyre 

just seen about wrist i have one but very hard one on left wrist

Got these lumps , which are painful, both sides of my lower back and both sides of my abdomen and a large lump under my breast central above my stomach. Over 10 years back in had a lump removed from my forearm which was very visible and causing a lot of pain in my work.  So recently seen my GP about these visible and painful lumps, his quick advice was use ibuprofen blah blah. And it would cause more pain removing them.! 

Hi everyone, its soo comforting reading your all stories. So about 2 years ago I noticed 2 slipperly bumps over my dimples, didnt think much of it until about 2 months ago when I noticed I have about 4 more of them all kind of sizes. I got soo concerned with them I cant stop touching them to see if they growing. They hurt when I bend down or sit up for too long, like while driving. Went to see a dr, out of hours, ( very young one, which I presumed she didn't have much experience with these kind of stuff?) she couldn't find them at first. Took her good 10mins to locate the biggest one and she looked confused, said she didn't know where to send me as it was about 5cm in size and quite hard. That have sent my health anxiety through the roof to the point I cant sleep I cant eat. I constantly think of my son and husband what if worst to happen. I have another appointment coming in 2 days which my gp said he wanted to feel them for himself before he sends me for a scan. Now I could swear they growing but might be just swollen from me constantly touching them? Give me some advice guys, Im seriously struggling here. 

Oh and may I also add, the pain is more like burning sensation. Its hard to describe it? I do feel like it goes on to my bottom too, but more like tingling on the top of my cheeks rather than aching. God I really do hope it's nothing serious 

Yes. I'm recently the same after my lower back started aching during prolonged sitting. I have a roughly 5cm (maybe bigger) long, very smooth but rock hard lump on my right lower back around the top of my pelvic bone. It doesn't move and with enough pressure I can dig my fingers down all sides of it. It doesn't hurt. I have a flatter one on my left side almost mirroring location but not size. It's less noticible and not as defined. My GP is so hard to get an appointment. I've had mine with sitting aching for roughly 6 weeks now. If it is Cancer, surely it'd be too big to care about treating now? Isn't 4cm or more stage 4 anyway? I have asperger's and talking to GPs is not easy for me to do. 

Hi did you manage to get an appointment with doctor? I was very panicking over mine so eventually seen my gp which said he isnt worried and in his opinion its fatty lumps but for my peace of mind will send me for ultrasound so he referred me to bone/sarcoma clinic? Now I dont know if he wanted to speed it up and exaggerated it a bit or did he think it was cancerous indeed. Fair to say Im loosing my mind while waiting for the scan. 

Hi did you manage to get an appointment with doctor? I was very panicking over mine so eventually seen my gp which said he isnt worried and in his opinion its fatty lumps but for my peace of mind will send me for ultrasound so he referred me to bone/sarcoma clinic? Now I dont know if he wanted to speed it up and exaggerated it a bit or did he think it was cancerous indeed. Fair to say Im loosing my mind while waiting for the scan. 

Hello, did you get your scan? What was it in the end?

Hi I had a appointment followed by ultrasound with bone sarcoma cancer dr and he told me it's nothing to worry about as its herniated fatty tissues that sit on my bones hance why it feels soo hard and unmovable. And because i have lost weight recently i only now discovered them but told me as long as it doesn't bother me too much or grow too big it's nothing to worry about. So basically its back mice and It was visible on ultrasound too which some people say it doesnt.

Thanks for the answer!

I have had the same thing for a while, I have about two or three pairs of hard, but moveable lumps on my lower back. Sounds a lot like yours. I have an ultrasound in a week or so, so I am hoping for the best aswell. Do yours mirror eachother, as in they are bilateral? Mine do, and I'm hoping it's not cancer since I presume cancer doesn't really work that way?

Glad to hear you got the all clear tho!