Cramp and pressure on pelvic area

Hi, I'm 31 weeks as of today. Since afternoon, I've been having Extreme pressure and cramp on my pelvic area and lower abdomen. It's so bad that walking is a painful task for me the whole day. Asking if this requires medical attention or I can just rest at home? I'm quite unsure how to go to a&e at kkh this late as my previous pregnancy are induced so the dr's and hospital did not guide me through anythg.