Metformin and High insulin

I just recently found out I have high insulin with numbers of 33. They put me on Metformin to lower my insulin levels and try and help get my periods back to normal. They were once regular then all of a sudden they stopped coming for over a year and I gained weight. I am currently losing weight and have changed my eating ways and have lost 20 pounds so far. I’m on day 5 of Metformin and I was wondering how long did it take any of you to lower your levels while taking this. I know they say it takes some time. Also ovulation, how soon has someone ovulated while taking Metformin? I’m currently trying for my first. The doctor said I don’t have PCOS and I had a tranvaginal ultrasound and they said everything looks normal. I’m not diabetic. I take Metformin 500 mg 2x a day with food. I take women’s vitamins daily and zinc. Just the last two months my period has shown up. I think with my weight loss it has help.