Pressure

I am 38 weeks exactly today. Since 2 days I feel immense pressure in my pelvic from inside when I am sitting and baby is moving. Feels like my baby is trying to rip my pelvic area apart.I can't breathe and it's like my baby is clawing me from inside. Is this normal or this is labour pain. Sorry this is my first baby. Just started to feel this thing from 2 days.