So the other day I had unprotected sex and my boyfriend came in me. This usually isn't a problem because I'm on the pill and take it religiously. However, this month I missed the first pill of my new pack because the prescription wasn't ready on time. I know I'm supposed to use a back up method of contraceptive when this occurs. When we were having sex 2 days before my placebo pills, he came in me a little bit by accident. He didn't expect to finish so soon. We immediately ran to the store to pick up plan b, and took it within the hour of it happening. now I'm on my placebo pills and have today, Saturday and Sunday left of the pills, and no sign of my period happening. Unusually I would have seen it by Wednesday night or Thursday morning. Now it is Friday and I haven't gotten it yet. Could the lateness of my period be due to the plan b pill, or could I be pregnant? Also I work at a day camp, and have never felt this much amount stress in my life. I come home crying every night, every part of my body hurts and I'm overwhelmed with the amount of walking and activities I have to do with my campers. Could the lateness of my period also have to do with stress from that? I'm sure that could be it, but a second opinion would be appreciated. Thanks