4 months sleep regression - what should i expect

I think my baby has just moved past the stage! Lasted almost 2 weeks, started when she just learned to roll. She then also rolled around in her sleep, in fact she prefers to sleep on her tummy. I was worried so I kept flipping her back but gave up. From sleeping by 930 and through the night to next morning, regressed to 11pm with plenty of waking to find pacifier + 2 night feeds at its worse (couple of days).