<s>[INST] hi, i have this horrible feeling of gas.. everywhere..lower abdomen and lower back. on the sided of my lower body as well.. it feel better when i release air, but my back hurts like crazy! what do i have? any other helpful infor is that i currently have a UTI and my period is coming in abut 4-6 days. i am also sexually active [/INST] Hi, Thanks for posting on Chat Doctor. After reading your symptoms I feel your pain is due to 3 reasons:- Amoebas : It causes pain in lower abdomen and back along with gas which eases off after the gas is released.- Pre menstrual back pain : Before Menstruation certain patients get cramps leading to back pain- UTI : As you know that you have UTI, It also causes pain in lower abdomen and back. I would strongly recommend you to visit your physician as he will confirm the diagnosis after clinically examining you and getting your stool test for the presence of amoeba. He may also give you muscle relaxants for pre menstrual pain and antibiotics for UTI. Meanwhile, you must avoid eating junk food and oily as well as spicy food. Your doctor will prescribe medicines accordingly. Wish you a speedy recovery. Regards </s>