<s>[INST] Hi, well Ive been feeling really sick lately It first started with really sharp pains in my lower abdominal area, it went away for awhile but came back with Nausea, cramps, really bad abdominal pain, people have been telling me that it seems like Ive put on some weight I took two pregnancy tests and they botChatDoctore out negative, recently Ive had the urge to throw up but it wont come out, Ive been having severe headaches, light-headedness, stomach pains, bloatedness, and my head seems like it has a fever, would could this mean? Thank you [/INST] Hi, many thanks for the query! Severe sharp & intermittent pain with nausea suggests ?ureteric stone, headache can be due to fatigue & exhaustion caused by recurrent severe abdominal pain, belatedness goes in favor of ?colitis. To come to an exact diagnosis-get a USG (Abdo-pelvis) done after adequate bowel preparation with your Doctors advise & till u get your USG done, u can take symptomatic treatment as per your Doctor. Wish u a good health. Take care. </s>