Why aren't I getting pregnant!!??

So around this time last year I was talking with a fertility doctor. We spoke about me not having periods and how a previous doctor said that I had a heart shaped uterus and PCOS. She felt like I had PCOS because I didn't have a Period and I had hair under my chin. She said I did not have a heart shaped uterus. So I started on metforman and clomid. Took them when they were suppose to be taking. Also another medication to get my period, I can't remember what It was called. So I had a period when I was suppose to. Still couldn't get pregnant. She made the dosage higher and higher, then we got to a point where I had to go to shots. I stopped all of it. Every month the disappointment it starts to play with you. Everyone around you just says it's not your time yet. 🙄 why not !?!?! So I've been off all medication for about 4 months. I'm still having regular periods on time. Still can't get pregnant. I don't know I just want to give up but I feel like I can't.