I have been on the pill for 5 months and have never missed a period until now. Last month i missed a few pills here and there but took them either several hours later or when the next pill was due to be taken. I had unprotected sex before, during, and after the time of the missed pills. I have recently been experiencing nausea, headaches, trouble sleeping, fatigue, and period like cramps but no period. i was supposed to get my period on 1/8/11 but it didnt come. i took a home pregnancy test this morning (1/13/11) and it was negative. Is it possible that i am pregnant but its just too early to tell?? Please help...