Eversince i'm going into my 32 weeks, my belly kept itching like crazy every night. Applied Bio Oil.

you may want to try aloe Vera gel. it's cooling, may help with the itch. also, you may also try rubbing with ice. grab some ice, wrap in towel and just rub on tummy. the coolness help to relief the itch. I also make sure to continue moisturising with cream.