PLEASE HELP

I’m having these weird feelings and i don’t know if it’s normal i’m 15 and i’m dating this boy and he was talking to me about how he wanted to finger me and i was fine with it so i let him and it was amazing i just feel like i’m a different person and i don’t know if it was normal for me to do that and it was my first time ever doing something like that because i felt so comfortable with him