I have no one to talk to about this but this community.... 

So in my situation, I am invited over to my girlfriends house and her parents aren't home until around 7. So me and her have been talking about having some fun in bed one day. So I asked her if we can do the sex thing on Friday and she said sure. and  then she said that right when I come in the house we have to do it right away because her parents will be home in a few hours... 

Yeah It is fking awesome! But I feel very awkward doing this because I'v never had sex before but she has many times and I also don't know the first thing I should say or do when I come in for that. Like should I just say "let's do it" and just start making out? or what? See where I am coming from? Like this planned sex occasion is probably one of the most exiting things happening to me but at the same time the most awkward. And plus I don't want to come off as needy, or as me using her. I love her, I just want that new experience and I want a stronger bond. But at the same time she's the one who made the plan of doing it quickly before her parents are back... I don't know. I am lost. I might be over reacting, but if I am, how? Or do you have any suggestions?