Beeline symptoms and conditions

I have been on Femcon since April and I have not had a period since taking the pill. I have had several pregnancy tests done, all coming back negative. No relief coming from my obgyn either. I was told to come back in another 2 months if i still don't start a cycle. Has anyone else lost or missed periods due to this pill? I just had a baby in January, but up until i took this pill, my periods were fine, even on the days i used to have them before getting pregnant? Any tips, or ideas?? I have also been throwing up and having sharp, not sore but, sharp stabbing pains in my left breast...which i told my doc about only to hear that it was related to not having a period!?!?!?!?!?! Help!!!