Hi there.  Sorry to read that you've found a lump and are feeling anxious.  That is completely understandable.

As someone who has had multiple fluid filled cysts in my 40's and 50's, it's natural to have concerns, I can say that in all probability your lump will be a cyst, that can be drained very simply to make you more comfortable.  They do feel moveable and feel sore when you press them, (well mine did anyway).  It's great that you are getting it all checked out.

At 54 I'm actually grateful for my cysts as it made me very breast aware.  I went in to get another one checked and it turned out I'd actually got a low grade breast cancer on the other side.  Having cysts doesn't in any way increase your chance of breast cancer so don't worry, but it's always good to be vigilant.

In the clinic you will probably have an ultrasound which shows up cysts very well.  Even if they want to do a biopsy try not to panic as they are done as much to rule out cancer rather than confirm it.  Once you've been checked out you can put it all behind you and feel the relief!  Wishing you all the best for a good outcome.  Try not to worry too much and keep busy.

That's very reassuring to read. I'm fairly convinced it could be a cyst related to being in perimenopause. I've had no periods since January and low and behold it's started today so from what my menopause nurse has, said it's fit in with the timings for when lumps pop up!

Mines quite solid and bumpy but moves ever so lightly so I'm really inclined to believe its a swollen milk duct or cyst.

Thank you for replying and I hope you're doing well xx

That's very reassuring to read. I'm fairly convinced it could be a cyst related to being in perimenopause. I've had no periods since January and low and behold it's started today so from what my menopause nurse has, said it's fit in with the timings for when lumps pop up!

Mines quite solid and bumpy but moves ever so lightly so I'm really inclined to believe its a swollen milk duct or cyst.

Thank you for replying and I hope you're doing well xx

I have had lots of refferals to breast clinic over the years many cysts and breast ducts causing problems, they have removed various lumps and ducts , The clinic is happy to see you and scan if required  the reassurance is great . I'm fortunate that I have not had cancer but they say things can change and come back if worried. 
l hope you have a similar experience and all is ok when you are seen 

take care 

Susie