I've have been having intercourse with my current boyfriend for about 6 weeks, mostly protected. 3 of the times that we did were unprotected. Each time we have gotten Plan B and I took it within the following 24 hours. I have also been on birth control for around 3 years and currently get my period every 3 months, due to hormonal issues. I'm not always consistent with taking it, but the past 3 weeks I have taken it at exactly the same time. The last time I took Plan B was about 6 days ago. I have been having bad headaches, fatigue, nausea, cramping, and tender/swollen breasts constantly since then. I've taken two pregnancy tests the past few days, both turned up negative. Do you think these symptoms are due to pregnancy and it's too early for the tests to detect? Or just lingering Plan B symptoms? I'm supposed to get my period 10 days from now, which will be the first since 2 months ago.. Please help me!