Plz plz help?!!

I had gotten off BC to try to conceive about 4 months ago and have had pretty much a regular period every month since getting off BC but now last month came and all of a sudden didn't have a period same as this month no period! I took so many pregnancy test all negative! I'm really trying to get pregnant but can't without a period! Was wondering if my gyno can put me on something for this besides bc to help start my period again and help me with conceiving ?! Was wondering if somebody else has had this problem?!! Also whatever she puts me on I wonder if my insurance will cover he meds?!! Help plz!!!!