33 weeks6days pelvic pain What do i do?

i am 33 weeks 6days i had an prenatal appt yesterday and found out that my cervix completly open and i am 2 cm dialated.i have been having constant pelvic pain and stomach pain since my appt.this is my 3rd pregnancy first child 3 yrs old,2nd was ectopic and now.with my first one i delivered at 36 weeks and had none of these problems what should i do.?ive tried warm baths laying down drinking cold water i dont know what else to try.

Has it been getting worse? Or is it coming and going?

During the day it comes and goes,at night time it is the worse and when i tr to lay down to sleep or something,and walking is a pain.