i had a miscarriage September 2013 my first pregnancy. ever since then i didn't get on birth control…

i had a miscarriage September 2013 my first pregnancy. ever since then i didn't get on birth control didn't use protection, but i still haven't gotten pregnant. i was seeing my OBGYN (Mary) she took test and everything came out normal. My periods are irregular always been since I 1st started

my husband has 3 girls of his own but having of course we do want our own eventually, sometime soon.

I'm not sure what to do i haven't went back to see Mary because we went to Chicago for a while. Has anyone had this issue before.?