TTC for 7 months

My fiancé and I have been ttc for 7 months now with out any luck. He was in prison for 18mths and a month before he got out I got on BC. I was only on it for 2 months. I don't know if the BC did something or what but I really figured id get pregnant the first couple months trying. I don't know if it's to early to see if I have fertility problems or not!? Please give me your honest opinion!