Could the BC be the problem?

ali
Myself and DH are very healthy individuals. We both have never had a sip of alcohol... in fact we hate it. Never smoked... no drugs... I mean all the above! It soo shocking to us that we have been trying for 5 months with no luck! We went to the fertility clinic and did some blood work and testings... everything came out perfect except my vit D was low. I was prescribed some supplements and I've been taking it for a month now! And still no luck... makes me wonder if the BC (ortho tri cyclen) is the reason we aren't getting any success. Has anyone used it before? If yes, what are your thoughts on it?