PMS or Prego?

Tiffany
Alright ladies.. My period is due in 4 days. The past week and a half i have been having this odd occasional cramping that i don't usually get before my period. It literally feels like sharp pains that wrap around into my butt. I am emotional, hungry a lot and as of today my boobs are sort of sore. PMS or Preg symptoms? Should i take a test and when?