Military prenatal pills?!

So I've been taking my prenatals for over a month before we found out we were pregnant that I got at our pharmacy on post. Well the daily doses for folic acid is only 1mg, I thought we needed at least 500?! Is anyone else military who takes these AVkare brand pills?! I'm thinking about switching....& did you doctor say anything about a different kind of prenatals to take?! Thank you ladies! I haven't been able to see my doctor yet.