My husband and I have been together for three and half years and have not used any form of birth control for nearly that entire time. We have sex at least twice a week, every week. Even though we aren't planning on actively trying to conceive until January, should we start seeing a specialist now? I'm worried that we've been having sex all this time and I've never been pregnant.

Also, I believe my husband has retrograde ejaculation (when he orgasms he does not always ejaculate).