Sooo I got outta bed and caught a cramp in the bottom of my stomach which then went to my vagina and…

Sooo I got outta bed and caught a cramp in the bottom of my stomach which then went to my vagina and then to my anus and the pain lasted about 2 minutes! NEVER Have I felt this before! Now I'm just sittin on the toilet looking stupid! I'm only 29 weeks! What is this....Should I go to the hospital?