Abnormal sleeping patterns

Hi mummies! I’m 25 weeks pregnant and I realised that in the last few weeks I have had trouble staying asleep. I used to be able to sleep for 8-9 hours straight! But nowadays, I find myself waking up after 5 hours and have been finding it really hard to go back to sleep each time. Now I hover around 5-6 hours of sleep daily. Will my baby be okay with the lesser sleep? Anyone else have this?