Is this abuse from my bf, help...serious answers?!

You need to dump this guy and find someone who will treat you right. It is abuse. Just because he was drunk doesn't give him license to choke you and force you to have sex. I don't know that I'd believe him when he said he didn't remember anything. He might just be using that as an excuse for his behavior. If he does it once, and can't "remember" anything, he just might do it again. I wouldn't want to be the girlfriend of a guy like that.

It is abuse, and when there's a first offence there's a second.
I went through the same thing in my last relationship, the trigger was the drink, all of a sudden every time he was drunk he would become violent and abusive.
It is clearly the drink for you boyfriend too, you should tell him what happened, ask him not to drink so much, (sometimes it can be certain drinks, sometimes certain amounts). If he insists on drinking get yourself out of that situation, stay at a friends for the night, suggest that he stays at a friends, or if you must, refuse to let him.
If you let him do this it'll ruin your relationship, if it hasn't already.

Experience

He rushed you to have sex? Did you actually consent to it?
Because really - that DOES count as rape, actually.

It's not potential abuse. It IS abuse.
You need to address his drinking. It doesn't matter if it was a one-time thing. He needs to know how to not drink so much that he starts to abuse and rape his girlfriend.

tell him he needs to stop drinking, cause of how he treated you that night. it can, and will happen again if you dont say anything about it.

Leave him for a week and make a decision. Abuse happens usually more than once, and talk to him about his drinking problems

hmmm...kinky.