what can i use for back pain??

Hi, I have terrible lower back pain and up to half way on my back, it's from bump/preg ..not damaged or anything..i am fainting alot and on bed rest/on couch so lying down a lot..just want to check can i put anything on it? I'm taking panadol for it(GP said) but anything else that can relieve it?

I used a heat pack/hot water bottle on my back when pg. Did your doctor mention anything about heat?

I fractured my coccyx a few years ago and it's playing up now that I'm pregnant. Consultant told me to use heat packs/hot water bottle to relieve it