I need advice 😳

My name is Julie im 18 and im trying to have my first baby. When i was 16 i was diagnosed with pcos. I stopped having periods and they put me on different birth controls to regulate me. It didn't work so the doctors put me on metformin to try to take the cyst off my ovaries so i could possibly concieve later. It worked for about 2 months then stopped. I went a year and a half with no period and completely lost hope. I went back to the doctors recently and they decided to double my dose. It finally started working the day after i got married and i have had normal periods ever since, but i still can't get pregnant. Me and my husband have almost lost hope. People keep telling us to wait but i cant. The doctors told me that I wont be able to have children after age 25. I just need help. Can someone please tell me what to do.