After my first time I was back on after a few hours and it was only that long cuz I had class Though it did hurt it was more of a good kind of pain but it was too much and I wasn't able to let him finish til later. Also a warning, it depends on the girl, but there may be blood, there was a lot for me but I know some who said there was hardly any so just keep a towel or something nearby, it also bled a little the second time but it didn't hurt then. It was probably just the hymen trying to heal itself then being torn again. Bottom line don't rush her, be kind and let it sink in mentally and physically, make sure she's enjoying herself too.
no, it doesn't always hurt the first time, it's different for everyone, you make it sound like you're going to stick it in and she'll get an electric shock and jump back 50 feet and she'll have to rest for a couple of days in a coma, relax mate.