Heavy content warnings for non consensual activity and boundary breaks.

So my client kept asking me if he was being rough enough and when I said he’s doing about as much as I could take, he got off, locked the door so my husband couldn’t come help me if I needed him, then decided to get rough enough I was screaming for him to stop and bleeding, screaming for my partner to come help me. My client attempted (successfully) to choke me out and when I came to I expect about 5-10 minutes later, he was doing 2 of the things I had previously stated were hard no boundaries for me and he told me if I screamed again he’d cause me further damage, when I did anyway involuntarily, he twisted my already damaged spine and now I struggle to walk without outside assistance. My mom said "you knew the risks" and the police officer I talked to said she couldn’t help me without solid proof. This guy now knows where I live and says that was our first warmup session and he'll be back twice a week for more whether I like it or not. Any advice on what to do, or any kind of support? Anything is appreciated at this point.