Pain after cervical exam?


Today I had a strep b test and cervical exam at 36 weeks - i am 3 cm and 80% effaced. Appointment was at 9 this morning - have been having horrid cramping and back pain ever since and now its 10 pm. I took a shower to see if the pain would ease and it hasn’t. I don’t remember being in pain with my other kids after pelvic this common?