I am now over 100 days without a period. After numerous tests the doctors say the only reason they can come up with is that my insulin levels are "slightly off". They also say I do NOT have PCOS. I have been on metformin for over a week which was prescribed to help level my insulin and assist with my period. I still have not started! I'm only 32, and fairly healthy. I've had 2 healthy, easy pregnancies but I'm just dumbfounded that they can not figure out why I'm not having a period. My husband and I have been trying to conceive #3 for over 2 years now with no luck. Has anyone experienced this? Any help or wisdom would truly be appreciated!