Contractions ?

Alexsis • Having a boy named Shandin with my boyfriend of almost 2 years?
Okay so I'm 37 weeks pregnant, I've never had cramps before and I have a lot of pelvic pressure and keep feeling my lower stomach get sharp pains and tightening up and it hurts and I don't know if these are what contractions are.... So does this sound like contractions ? What do they feel like because I'm not sure what's going on