First night with girlfriend.

First time on here so apologies for any retardness.

I've been going out with this girl for the past 4 or so weeks but last night was the first time I've actually been back to hers. Only problem was it was for her birthday and thus was after a lot of drinking.

Long story short, despite being all over her, all the alcohol pretty much killed any chance of an erection so I let my fingers and lips do all the work.

Obviously, this isn't amazingly good but exactly how bad is it?

It hasn't been mentioned yet and she was fine and normal with me in the morning but it's really annoying me now. I'm the type to mull things over repeatedly in my head and I don't want this or any possible reaction to it to screw things up with her.