Well, as far as jerking it goes, I do it at least 1 time a day, usually more. I have had no problems getting up when its time to perform. Although I have read that "recovery" time does vary from person to person, so you may want to try post-poning that act if you know that you are likely to be getting some in the next day or so.
And as everybody has said: Relax! You totally psyched yourself out for that one. As hard as it is to think of it this way while still a virgin: It's just sex. You'll be having a lot of it (hopefully
). Just let things flow and it will happen.