Is it normal for me to sleep all day?

I had a baby about 2 months ago and after birth im just like never hungry. I could go all day without eating but im always sleepy, my baby sleeps perfect through out the nigh,he sleeps from 10pm - 8 or 9 am..then he goes to sleep at 11 and wakes up at 3 or 4 & sleep when he sleeps and when my husband get home from work i leave the baby with him to take a 3 hour nap. I don't think is normal but i want some advice. I just rather sleep than eat. Im also getting dizzy & felling weak and faint. this is not a normal me. I never used to be sick and i lived a very healthy life style,but after birth just sleep sleep sleep and i never get hungry and when i eat i get full with the first bite. WHAT SHOULD I DO? IS THIS NORMAL? WHAT CAN BE WRONG WITH ME?