He slapped my face during sex.

Had sex with a guy for the first time (ever) and I told him I like having my ass smacked during sex so he did that. But then he also smacked me on my face. It's been a while since this happened but I'm still thinking about this. At the time, I thought it was wrong because I didn't consent to it. But now I'm wondering: does consenting to having my ass smacked also mean consent to have my face smacked? I'm almost sure of the answer but just having some self doubt. It was wrong, correct?