6 weeks pregnant and need advice?

Hello all! I just found out I was pregnant after trying for 6 months! My period was 7 days late so on the 8th day I took a HPT and I got a BFP! I didn't believe that one so the next day I took another one, postive and didn't believe that one and took another one this morning...positive! I still can't believe it and I'm so excited/nervous. I called my OBGYN and I have an appointment for 1/15/09 (they said that they follow the HPT and since I've gotten three of them and haven't started my period that I'm def pregnant.) My doctor said they want to wait until i'm 8-10 weeks so that they will be able to see something when they do the sonogram. In the meantime, what vitamins should I be taking? I already take C, women's mulit, Iron, folic acid. Can anybody give any suggestions or advice? Thanks and sorry for the long note!