Hi, i've noticed a couple topics dedicated to this pain under the ribcage. I am a 20 year old female and have been having these pains for approximately a week. I am currently taking the medication, meridia, which is a weight loss medicine. My periods have been regular, I have no history of acid indigestion/reflux and am wondering if any of you are experiencing what I am and if so, do you know what it is?

Starting a week ago, I began to develop a very sharp pain in the upper right quadrant underneath the ribcage. The pain worsens when I breathe in and feels like it radiates up to my shoulder (the shoulder pain almost feels like a pinched nerve or someone blowing cold air in a cavity in your mouth..). When I am sleeping, the only positions I can find that are comfortable are either on my back or stomach, and lying on either side causes a pain that feels like my ribs are poking some sort of organ.

I have had no signs of fever, nausea, vomiting, diarrhea, etc. And the pain does not change when I eat or drink. There isn't any pain in my ovaries, and I have had little to no back pain from this. I've taken zantac 75 thinking that would help (if it was acid indigestion) and it didn't do anything for me. My whole chest feels like a bubble of gas, not to the point of pain, but just bloated..Like a "can't burp, can't pass gass" feeling.

Please let me know if anyone knows any kind of information on what i'm experiencing. I'm getting really worried.