Contractions or Braxton hicks?

Allie

Hi,

I'm currently 33+3 weeks pregnant and for the last week, I've had intense and slightly painful pains in my belly/pelvic. The first one lasted like 45mins and at that time I was swaying back and forth trying to breathe through it while my body was trembling. Then again today the same thing happened. Had smaller ones in between but every time these strong one's happen im worried something is happening.

Anyone else had this or similar