I'm 17 and my boyfriend and I were both virgins. We started messing around and he stuck it in one time without a condom. I freaked out and made him stop. This was August 18th at around 8 pm. I know he only stuck it in once, but I know you can still get pregnant and I got worried. I took the plan b pill the next morning around 10. I also take Tri- Previfem birth control on a daily basis. I usually have irregular periods, but my period tracker said I was ovulating, but I've heard that was really hard to tell. I haven't missed a period yet, I'm just worried. Please help.

Tracking your period is one thing...your actual ovulation can only be determined with a basal temp chart or medical testing.

Until you are two weeks late there is nothing you can do but worry. You can't get an accurate HPT until then.

The likelihood of your being pregnant is very small. But you will not know until you miss your next period.