I have been trying to conceive for over a year. Need some insight on what may be wrong?

I recently went to the doctor and got blood work done and a transvaginal ultra sound- Everything came back normal. About 5 months ago, I had a LEEP procedure done for high grade dysplasia, but my gyno said this problem wouldn't have affected my ability to conceive. I started taking vitamins about 4 months ago. Also, I've been off birth control for about a year and a half. I now get acne around my chin, so i thought I may have a hormone imbalance. However, i assumed they'd check this in my bloodwork. I have a regular period and also chart my BBT. It doesn't seem I always ovulate on the same CD. Any ideas?