around the time i got pregnant i messed with a guy one time, we used a condom and it only lasted about 30 to 40 seconds he didnt ejaculate and i was still fooling around with my ex. me and my ex have been trying to have a baby for a year. he got me pregnant once and i miscarried at 2 months. could it be my ex's since we always do it without a condom or could it be the other guys'?