question: I had unprotected sex 2 months ago. I took the morning after Plan B pill. The problem is that I am on birth control - Jolessa - so I only have my period like every 3 months in a given year so I can't tell if I missed a period. 2 weeks before I did it, I hadn't been taking the birth control regularly but I have been. I took 2 pregnancy tests with the First Response. One was a month ago and the other digital one I took a week ago and both were negative. I know because I am on birth control the hormones might be screwed up though and screw up the test. Is there any way I can know for sure? If not, I intend to visit the doctor around Dec. 20th or so.