Might be headed to labor and delivery

WARNING: photo contains partial nudity.

Last night i laid down and felt pain in my belly. This morning i awoke and can hardly walk. Theres so much pressure and closing my legs is excruciating.ive tried squatting but the pressure just increases. I am almost in tears as the pressure is increasing in spurts and hurts like hell. The blue line shows where the pressure is, with the most pressure in my bottom and lower front of my vagina/ lower pelvic bone area. Im worried and dont k ow how im going to manage taking 3 kids to school today when i can not stand up straight let alone walk😥 i dont even know if its a contraction because ive never had this much pressure before while having one. I feel like ive been beaten with a bat in those areas. Im 31 weeks 1 days.