@jazminecaraball, my son no matter if I put him on his back he will turn to his side and then turns to his stomach it's just what he does that I can't control.

Yeah thats what they told me and my mom said she put all her niece and nephew on their stomachs and they were fine lol.. So i would do it throughout the day and check on my daughter and then at night I would let her sleep like that and then end up rolling her over...

@sonjaeg, hes so use to sleepig on his stomach the doctor told me to stop and start putting him on his back.. :/ he hates his back

They don't recommend it until they can roll over because they aren't able to move their head as well when they spit up so it can cause a possibility of suffocating.... Which to me laying them on their backs and them spitting up would choke them... Idk i put my daughter on her stomach all the time and kept an eye on her... I figure generations before us put them on their stomachs and they were fine... Another reason is SIDS, they can go into a deeper sleep on their stomachs