Baby's being a pain in my butt!

I mean this literally! Normally my left leg just goes numb if I am on my feet to long but now at 11w4d I have to walk around putting counter pressure on my right butt cheek (sorry TMI) cuz I can hardly walk it hurts so bad! I look like a nut holding my butt. I work with individuals with disabilities and they are laughing me think "and she is suppose to be the "normal" one at least we don't walk around holding ours butts!"(I love my job!) Darn satic pain is driving crazy any one with any ideas on how to easy sciatic pain?