At what age did you mommies start letting your baby's sleep on their stomach my son hates sleeping on his back he'll sleep on his side unless I put him on his boppie pillow

Sleeping positions my 6 month old hates:

1. Sleeping on his side.

2. Sleeping on his back.

3. Sleeping on his stomach.

Yesterday I went out with my boyfriend went to watch a movie, me and him don't live together yet. but point is yesterday when he was dropping me off his like sleep over at my house witch the mom and dad lives. I said no,

his response was why is everyone deciding or making choices for you and their going to do the same with the baby, when I know that's not true. what he thinks is that my mom tells me not to sleep over. So he left all mad. and I felt in my heart that he went on and cheated on me...

How important is it to sleep on your left side? I catch myself sleeping on my back and right side all the time 😕

Anyone else have the same problem??

Adam is 7 1/2 months old and keeps rolling to sleep on his left side.. That doesn't bother me too much but then he rolls on his stomach most the time. Im awake most the night rolling him back over. What do I do?!?