Mommies that have taken mediformin to regulate periods did you have any symptoms of the medication?

Mommies that have taken mediformin to regulate periods did you have any symptoms of the medication?

I have been on it for 4 days now and been feeling a little sick to my stomach and lightheaded. However I called about my he lightheadedness and that was because I wasn't drinking nor eating enough. I'm going to keep taking it. Was just wondering if any of you experienced side effects from it?