tired but cant sleep..Help

ashlie
help...need advice on how to get sleep. Im 4 wks and I am soo tired during the day and try to nap but I just cant fall asleep. then at night I feel wide awake. with my son I could sleep all night and most the day with no problem. before pregnancy I would just take zzz quil but now I don't want to take anything. anyone else had this problem and how to fix it?