Labour? 39+4 today!

Amberlynn
This may be a stupid question but how the Heck do I know when to go back to the hospital? I was told last night I was in early Labour with contractions around 5 minutes apart but I hardly felt them. I had major kidney problems so my pain tolerance is very high. I am feeling a ton of very uncomfortable pressure and pain that is worse than last night but I don't know if its worth going in yet or if I should wait it out?