Please read and help me out. Any advice is great, thanks in advance💗

I started my birth control pills in October of 2015. I started for irregular periods (every other month ). I got my ovaries checked for PCOS in October 2015 also. They said my ovaries are perfectly fine. 
If I stop my birth control would I be able to ovulate? I don't think I was ovulating before because we tried for almost a year and nothing 💔.. And now i think I should get off the BC and try again .. 
I also heard that having a vitamin D deficiency can cause irregular periods. And I had a major vitamin D deficiency. But idk why I wasn't ovulating if they said my ovaries were okay? 😭
Any help would be great. Thank you.Â