Freaking out first time mom.

I’ll be 40 weeks pregnant tomorrow. My doc told me that the contractions will be at the top of my abdomen. I’ve been having this deep pain. Like I can’t tell you where it’s coming from but it’s somewhere deep and it’s been coming every hour (sometimes multiple an hour) since 10am. 😬 it will all of a sudden stop and I’ll be okay for an hour but then it will come on stronger. I haven’t had any since 6pm and it’s currently 8:30. Although, I was taking a bath when all of a sudden I notice the water was a reddish tint. I freaked out and drained the tub and when I went back to my bathroom, the water that was left was red. Should I probably go get checked? I was watching the baby move in my tummy while I was in the tub and have felt him move since.

I’m a first time mom so I don’t know what’s normal or what’s not. 😬