when should I go see my doctor?

I've been off of BC since November. I've been tracking and glowing when told to...I haven't gotten pregnant yet. I've never had female problems, I've actually been told I have a "beautiful uterus" haha, I'm 33 years old and afraid I'm getting too old!
So my question is, is taking prenatal vitamins help with becoming pregnant and should I go visit my doctor or wait? I've been told to give it at least a year