Hi Everyone - worried 25 year old here!! Cutting to the chase, I'm a smoker but trying so hard to stop or at least cut down. I went for an X-ray last year October 2021 because I thought I felt a hard mass under my right 10th Rib (quite literally on the side of my body where my waist is). I also had a chest infection so my doctor felt that area and said "it's just your rib... I think you're stressed". He sent me for an XRay regardless and I never heard back about it even though I asked about it but he just shrugged it off. The radiographer said lightly to me before she sent it off to him that she couldn't see anything alarming. So I literally just breathed and got on with my life. Fast forward onto now  (so almost a year on), I feel like I can feel it again on my right side and it's hurting me, probably because I keep prodding it. I feel like it's something sinister and to go along with it, my ribs feel bruised in that area right under my right breast. Now I hate saying the word but I'm scared out of my mind I have lung cancer or a tumour. Though not even a year ago, my XRay was clear.... I assume. So do you all think I'm worrying about nothing? I work in healthcare so I asked my manager to feel the area and she said she couldn't feel anything. 
it doesn't hurt I breathe or take deep breaths. My chest infection cleared up with antibiotics and I don't feel wheezy or any blood loss. I am just obsessing over that one area by my right ribs all of the time. Does anyone know what organ could be sitting right under the 10th rib? I have it on my left side too but it's nowhere near as big and it's not painful like the right one. 
i have a 2 year old daughter and my mother has lymphoma cancer. We've had 5 people in my family die of sudden heart attacks and cancers in the last 5 years so not surprisingly my health anxiety is through the roof all of the time.

what should I do? Should I go back again and mention the same issue??

thankyou!