<human>: I had sex for the first time with my boyfriend 3 days ago. we used a lubricated condom and Im on diane 35 birth control pills. He hasnt had sex since his ex about 8 months ago. Hes been tested and Ive never had sex. Everything went well but right after my lower abdominal started to hurt and when he fingers me I have bad lower stomach pain and kind of a burning sensation when he fingers me. And it still burns afterwards too. I have no weird discharge, no rash and Im not itchy it just burns. Help? Is it an infection? What should I do? Whats happening to me? Thanks
<bot>: Hello. For the symptoms that you have the most likely diagnosis is lower urinary tract infection. This infection is very common in young women after the sexual activity. I treat my patients with Cefuroxime 500 mg twice a day or Fosfomycine 500 mg thrice a day when lower urinary tract infection is the diagnosis. Please, go to your local doctor for confirm diagnosis(with a small sample of urine the diagnosis is confirmed in 5 minutes)and for prescription. If you have a fever, it means that the infection has progressed to upper urinary tract, and you should go to Emergency Service. I wish you good health.(If the answer has helped you, please indicate this)