See another doctor. They should verify you're not pregnant, and then try to analyze the cause of your missing period and regulate your hormones for you. At the very least, you should be given progesterone to induce your period. I've been told it's not good to go several months without bleeding. My doctor, however, also seemed disinclined to diagnose the reason behind my missing periods. She would rather just give me meds to get my period and then meds to ovluate (Clomid). From her point of view, the cause could be stress, PCOS or a number of other things...but the solution was the same either way, so I guess she didn't want to waste her time. That really annoyed me. If I hadn't gotten pregnant, I'd probably have asked for them to figure out why I wasn't ovluating and menstruating.