F boy help

So there is this guy that is a f boy and he has been talking to me for a few days and like calling me a hottie and all this stuff. Then today he says that we should hang out so I tell him I’m going to go to the night swim in my town Friday and he said he was going to go so he can see me. But I’m suppose to start my period tonight and I’ve never put in a tampon! I need help!!!