I've been sleeping my 9 week old son on his stomach since he was about 4 weeks old. He can lift his head 45 degrees on his arms, and even moves his head from left to right while he's sleeping. Of course because of all the latest info on SIDS and sleeping on the back, I'm getting paranoid....but he just sleeps so well on his belly (he even sleeps all night from 8:30pm-6am).

Should I be worried as I haven't had problems yet? Does anyone else sleep their babies on their stomachs?

THANKS.
1st time paranoid mom