Extreme Pelvic Girdle Pain

Jessica
I am 37+3 and after showering I realized that I couldn't walk! My pelvis feels like it's shattered and my legs don't move. I've had light contractions for the last couple of days that feel like mild period cramps in the front, and wrap around to my lower back. 
I'm a FTM so curious if anyone experienced this as an early sign of labor, or if Im just going to suffer for the next three weeks 😰