Help!

Natacha

I am almost 36 weeks with my 3rd. I was checked two days ago and was almost 2cm dilated which I know can mean little to nothing at this point. My issue is, I keep having period cramping but the dr told me to keep track of how long in between.... well with my period cramping I can tell if it comes and goes just seems constant and then on top of that I keep having Braxton hicks that are painful but not regular. Anyone else experiencing this?