Hi,
I have been on birth control for about six months now. I took my birth control one month, then had a normal period. Then I started the next pack and lost the pack after three doses. A couple days later, I started my period again. I waited until that following Sunday to start a new pack, and then five days in to that I had unprotected sex. I was worried and took a plan b two days later. And now my period is three days late. I continued to take my birth control until I was finished after the plan b. Do I need to worry about pregnancy?