Why urinary tract infection stops pregnancy. I'm tried from ovulation day than 5th day I have a urine infection. So i'm expecting that I get pregnant but not my periods has comes yesterday. So it this the reason for not i'm get pregnant. And I wants to ask like my previous period date is 19 June and now my period has comes yesterday i.e.15th July so now when is my ovulation day. When I again start to conceive.