Worried baby might be early

Full of worry as I've had nothing but really bad cramping, backache and sickness since last night I've tried everything to ease the pain. I am only 32 weeks 3 days. I don't really want him to come just yet as I personally think it's still too early and haven't a clue what would happen if he was to be born now as this is my first baby but I have seen post on here of prem babies. Anyone got any helpful advice for me ?