5 week old wants to sleep on stomach

Help!! My 5 week old keeps rolling herself over to her tummy when she sleeps. She doesn't stop fussing until she rolls herself over, and when I turn her back over she fusses until she rolls over again.

Is anyone else dealing with a LO rolling over too early?

What should I do to keep her safe?

I've been thinking of rolling up a blanket and making a bumper with it to keep her on her back but I don't know if that'd be more of a SIDS risk than her sleeping on her tummy. This momma needs advice!