OP I am so glad PP's horrified reactions to your awful b/f meant that you took action to get your physical health protected.
Now ... what steps do you feel able to take for your mental health?
To have been exploited & abused by this man like you have, but on this occasion, feel so bewildered by whether you should be allowed to object to his treatment of you, is an awful position for you to have ended up in.
I suspect that his abuse went far further than physical, & he treated you with no respect or care. None of this is your fault - the dynamics of abusive relationships & how they are constructed to entrap the victims are complicated, & very difficult to understand without some expert guidance.
To help you recover now, & to protect yourself in future, you need information & support. Please consider doing The Freedom Programme - www.freedomprogramme.co.uk/
If you do wish to report to the police, the hospital team you engaged with would help you. But you have no obligation to do so, & should focus on doing what makes you feel well & safe.
Other resources, should you feel you want to explore this further -
rapecrisis.org.uk/get-help/looking-for-information/what-is-sexual-violence/
www.amazon.co.uk/Why-Does-He-That-Controlling/dp/0425191656?tag=mumsnetforu03-21
Congratulations on taking yourself seriously & getting to hospital.
I am so sorry it was necessary, & trust your rapist is now, or very soon, going to be made aware he is now an Ex?
Apologies, I cannot remember your living situation. If it involves disentangling yourself from a shared home, please keep posting here so you can be advised & supported as you take the steps needed to ensure you never need to spend another night under the same roof with this man again.