Hi I Slipped On A Slippery Floor Today Which Led

Hi i slipped on a slippery floor today which led my legs to spread very widely and it happened twice today, my pelvic area and back are very tender now i have trouble walking or standing and when i walk i have to hold on to something, getting up after laying down makes it even worse. I am 30 weeks pregnant at the moment do you think i should go to the nearest ER or urgent care? The pain seems to get worse.
Thank you!