Signs before baby?

38 weeks on the dot today. Woke up with cramping, constant. Super heavy period cramps. I have felt myself breathing through them a few times throughout the day, but never really gotten any worse. Still cramping now🥴 lower back aches like mad (not unusual for me) and now I feel that sick to my stomach that I’m scared to eat incase it comes back up! I’ve had cramps lasting a while before, Monday was the last time it was about 4 hours then died down. But haven’t had a break today, I’m debating wether to try some paracetamol and I NEVER take them for anything, in fact I never take any pain relief for anything, haven’t for years.