numbness

Nikki • wife 12/16/15 and mommy Landen 06/07/2016 baby #2 due December 2018

so I'm about 6 weeks and 5 days ( I don't go to the doctor till May 8th, last period was March 10th) but anyways. every time I lay down my lower back hurts so bad, but also my right leg and butt cheek goes numb. this is my second child and I don't remember this with me first. so I be worried?