I think i might have an untreated sti, i ignored symptoms for quite sometime. my ex girlfriend was diagnosed with sti and given meds, my new girlfriend again. the common denominator is me. but as far as symptoms i dont get any nor or im just used?

You should e tested: It would be helpful to know what your girlfriends were treated for

You could: There are a variety of STD's including gonorrhea and chlamydia that may have no obvious symptoms in males. It sounds like you may have one. It is reasonable when you have several partners to have std checks on a regular basis whether you use condoms or not. These germs can get around them. When women get these std's it can make them sterile or require hospital care.