I'm on birth control and haven't had my period for 2 months, it's about to be 3 after Saturday. I've had sex but with protection, I always take my birth control on time, but it's worrying me that I haven't started my period. I took a pregnancy test last month and it said negative. Also, have been really stressed. I've had my normal symptoms of starting my period( back ache, bloated, cramping). could I just be stressing myself out too much to start or could I be pregnant?