40 +6, I went to see my midwife the other day due to this and my back and hips seizing. She said in mornings it's where you been sleeping and not moving and at the end of the day it's where tierd. Baby is low down so it's the preassure of that too. I was advised not to fully rest, not that I can with a 5 yr old and 2 dogs. And not to go overboard and do loads. I was also told regular paracetamol wil hep. But everybody is different though so might be worth a phone call to midwife and see if an give you better advice and if your allowed paracetamol