What could cause lower abdomen painful on the left side, bloated , feeling like vomiting and choking and chest pains?

Descending colon: I would worry Pelvic Inflammatory Disease disease, if sexually active. Other considerations are: parasites, ulcerative colitis or non-specific colitis in your age group. Do you have fever? Diarrhea? Bloody? Nausea? This is potentially serious and you should seek medical help: Gaborone. (aside: your country is very beautiful-I visited it last month).