Is this how labor starts?

Priscilla
Im getting very painfull Backpain and cramping lasting about 30 second - 50 seconds happening every 9-8 minutes they hurt pretty bad i can feel when there about to start they started earlier in the day but i was able to ignore it and now they just got alot more painful iv been laying and sitting in bed trying to relax and get tired for about 2 hours and they have not stopped i will be 40 weeks friday if it matters