Has my brith control caused my hormones to be messed up?

When I was 15 I was put on birth control because I was having bad periods. After about a year and a half the doctor took me off because I was not ually active and they wanted to see how my body would react on its own. Then not too long after I was having some anxiety and major trouble sleeping. I dealt with that for a few months and then later went back on birth control which I think was when I was having the problems. I went back on because I was ually active. The problems stopped. I was 18 at this point. Then at age 21 I went on lexapro for slight anxiety which was very minimal. Between the birth control and the lexapro I was sleeping great and my anxiety problems were obsolete. Now at age 27 my husband and I wanted to start having kids. I went off of Birth control and lexapro in July of 2009. In November I started having really bad anxiety and insomnia. To the point were I couldn't stop shaking, my heart would pound and I just definitely didn't fell like myself. My doctor has checked out thyroidism and several other things but has decided on anxiety and put me on Zoloft. I feel a lot better but still not completely myself. And I still can't get pregnant. My husband and I have been trying for almost a year. Do you think that because I was on birth control for about 12 years where almost 10 were consecutive, that my hormones are messed up and that is what is causing my anxiety problems. Is there anything I can do? I know I can't get pregnant if I continue like this - help!