Metformin

Any one pregnant taking metformin?how long did you take it?was it prescribed by your gynecologist?what was the dosage?iam desperate guys.I am 41 and has been trying. I have low ovarian reserve making it harder for me to conceive. I can't afford <a href="https://glowing.com/glow-fertility-program">ivf</a>. Would like to try using metformin. Any words of advice and experience with this drug please. Thank you