epidural , back pain

i had my baby almost a month ago. i got an epidural, had it in for 18 hours and then had a csection. I was on pain meds for 2 weeks, but last week i started getting horrible back pain where my epidural was in. they did poke me at least 6 times before getting it in, and then i dont think they did it right anyways because one side of my body was more numb than the other. anyways, it hurts to touch, it hurts to bend over and sometimes walking too much hurts. is this normal? will it go away??