weird back pain?

So these past few days I've been having this weird pain in my back, it's constant but not really a bad pain... just kind of uncomfortable and annoying. But it's in the upper area of my back right near the bottom of my ribs and more towards the right side. It hurts when I breathe in and also when I press on my stomach in the area right where the ribs split over to the right as well. Has anyone else experienced this? Could it just be the ulcers? I figured it was probably connected to the colitis somehow because of the corresponding stomach pain. I thought it was just gas but after a few days and passing gas I've decided that can't be it. Now I'm just not so sure!

Sorry if this is a stupid post! Hope everyone had a nice three day weekend :)

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Female, 22, Ulcerative colitis (pancolitis) since 1999; GERD; gastritis; osteopenia in hip & lumbar region of spine from long term prednisone use

Current Meds:
Primadophilus Reuteri
40 mg Citalopram (for depression/social anxiety)
125mg Imuran

10meq Potassium Cl

Did it start out as sort of a dull ache and then get worse? It's not excrutiating for me (yet) but it's definitely annoying. I do occaisionally get pain that is a SHARP excrutiating stabbing pain in my chest that really hurts when I inhale so I take little tiny shallow breaths until it goes away, sometimes it lasts a few minutes. But that hasn't happened in a week or two so I don't know if that could be related.

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Female, 22, Ulcerative colitis (pancolitis) since 1999; GERD; gastritis; osteopenia in hip & lumbar region of spine from long term prednisone use

Current Meds:
Primadophilus Reuteri
40 mg Citalopram (for depression/social anxiety)
125mg Imuran

10meq Potassium Cl

Caltrate Bone & Colon Health- 600 mg calcium + 400 IU of vitamin D

Vitamin B-12 Supplement