For women only-Menstrual cycle?

I'm 43 and haven't had my period for 3 months now. I am not preg nor am I menopause. I did take cholmid, a fertility drug several years ago, it caused my period to change rapidly, I alwasy kept getting it, 2-3x's per mo., it seems like it's going the opposite way, it was getting lighter and lighter, now nothing at all. I do have tiny fibroids, but I just had a l ultrasound and they are not large enough to remove and everything else is okay. I am under a lot of stress these days with job hunting for a perm job. Has anyone gone through this?