!!!!HELP PLEASE!!!!

today i started my period. my first days are usually okay considering the flow. Tomorrow im going to my boyfriends house, and I have the worst flow on the 2nd day of my period. This is the first time im going to his house and now im more scared than I already was. Any advice? ***UPDATE*** I never use a purse so how do I bring pads over there, and once I do need a change where do I put them?