Ok so since around 9pm last night I have been having pressure in my lower back that kept coming and going, it was every 20-30 minutes or so (I wasn't timing properly, just guessed) managed to go to sleep around 1am and haven't really noticed them whilst I slept. Woke up about an hour ago and it's definitely still there coming in waves and is a lot stronger than last night, it isn't exactly radiating to my tummy though.. Just about to start timing them. Could this be labour?