Bad period like cramps 38 weeks pregnant?

Kayla • ❤️Roman Anthony born April 27th, 2017 at 1AM❤️
For the past couple weeks I've had light period like cramps on and off, but in the middle of the night Last night I started getting bad period like cramps, and they've been on and off all day today, I can't get comfortable, my lower back is hurting, and my legs are aching too... are contractions always unbearable? They hurt but they're not unbearable.