regarding fake msg

sir/mam my name is siva and my email i.d is siva_kumar26691@yahoo.com and i receive a msg regarding coco cola annual promotion united kingdom from some fake address and they asked to send them my information and i have sended it and then i came to know that that is a fake message. so what should i have to do now?
is that effects me?
what should i have to do now please inform me