Anyone else? HELP PLEASE ♡

Hey! So, im 36+6. For 2 days i have been having lower back pain thay comes and goes, not regularly. I have serious pressure in my pelvis/vagina/bum and am extremely fatigued. I cannot walk or stand for longer than 10 minutes without having to lay down to relieve the pressure.

Any one else having these things? Is it normal? I never had this with my first! TIA X