I didn't even have to read your story to be able to answer your question.
having sex once with that person, doesn't mean they own your body.
even if you are in a relationship with that person, and have sex all the time. the other person must always consent. You can not consent to sex when you are too drunk, and/or sleeping.
So yes it was rape.
I would go speak to a professional if I were you.
Look up sexual assault clinics in your area.
If you ever need anyone to talk to, feel free to msg me.
I know what you are going through right now
<3