Back labor is labor. Instead of the pain in your abdomen, it's all in the back.
It's probably just the baby's head in your pelvis go get a spa pedicure that always makes my back feel better oh the massage chair mmmmm make them leave you in the chair for a good long time
Tennis ball to roll on against wall???
Go back on thursday went last Thursday wasn't dilated any haven't open yet
Stretches ...on YouTube search back stretches for pregnant and do what you can or heat pad or warm bath with soothing oils
I use a heating pad, @ 20 min at a time, it provides decent relief.