Due 2/26. Cramping and suddenly intense pelvic pain

Savannah
This evening around 5:00, I started getting pelvic pain for the first time. It is very intense. I can't bend over, get out of bed, open my legs, or walk without pain. Also, I'm getting menstrual-like cramps. What is this? Baby dropping? Effacing? I'm not suppose to give birth for 28 days.