31+2 and I'm in so much pain 😢

So I'm 31+2 weeks with baby number 3. I've kept myself active the whole through this pregnancy as well as working full time and running my household.

However last 2 days I'm just in agony all the time. My legs and bum feel as though I've done a full gym work out... I can cope with that, but I keep experiencing this buring pressure pain down below, I get shooting and jabbing style pains in my tummy when I lay in bed. Today even my baby's movements have felt so painful... What's happening to me 😞😢

Advice would be greatly appreciated xx