I Have Right Sided Pain In My Lower Abdomen And

I have right sided pain in my lower abdomen and my colon feels swollen (best way to describe). When I eat I bloat and it makes it worse. Sitting really adds pressure. I am not running a temp. I have been dealing with this bloating for about 3-4 weeks and it seems to be getting worse. I am not sure I should be flying tomorrow. Does this sound like appendicitis or IBS?