A week ago, I had lower abdominal/ pelvic pain, nausea, and constipation. This continued for several days until the pain began to move up my sides and is now at my rib cage area and it also comes with a burning sensation at different places from my pelvic area to my rib cage and around my sides. What could it be?

It could be all kinds of things, serious things. Go to a doctor, or even just straight to the ER.

It could be all kinds of things, serious things. Go to a doctor, or even just straight to the ER.

What kinds of things? I just want to know possibilities before I go.

Are you male or female?

Female

My appendix is the main possibility

Also gall bladder, something "female," something in your digestive system. Nothing I would let go and ignore. Oh, yeah, also kidneys.