Back pain, HELP!!

I am 36 weeks and 5 days, on Tuesday I was dilated 3cm and 50-60% effaced. Doctor told me to take it easy until 37 weeks. I have been having the worst back pain ever. Feels like the baby is so low, sometimes when I stand up my leg goes numb. This is my second baby....first one didn't "drop" until labor. Any recommendations for my back? Seriously feels like my entire lower back is bruised. 😭