Why Am I Super Hungry???

I’m suppose to start my period in 3 days and for some reason I’ve been SOOOOOOO hungry! I know I usually can tell when my period is coming bc I start wanting chocolate super bad & tmi but i always crave sex in the days leading up to it but this time I’ve been so hungry it’s unreal. I’ve lost 8 lbs this month and I’m scared I’m gonna gain it back. I’m also just puzzled as to why I’m so damn hungry! Anyone else deal with stuff like this?