I've been sleeping with my boyfriend for 8 months. About 2 months ago i started getting incredibly sharp stabbing pains in my abdomin (quite low down) They were so unbearable that i'd double over in pain & have to sit down. Too afraid to tel my mum,i asked my pharmacist who said its an infection from sex. As i was unable to get a prescription for meds i decided just to try pain killers. The pain intensified & become a constant dull ache. A friend suggested that its a bladder infection & recommended probiotics which worked amazingly. I've not had once since but im still confused as to what it is that i had...was it a bladder infection or something more serious like an std which i'd need professional help for?