Cramping & vomiting-38 weeks!

Ma

I’ve had literal morning sickness throughout my whole pregnancy, so vomiting in the mornings is nothing new. However, the last 2 days I’ve had diarrhea and the soreness/period cramping is getting worse and worse by the hour. I don’t feel contractions yet, but I am experiencing back pain now too. Could this be a sign of early labor?! Really wanting a December baby since she is measuring bigger than she should be. Can’t wait to go to my ultrasound today to see exactly what’s going on in there! Hopefully I’ll be sent to the hospital 😬😅👶🏼🤰🏻💗🐘