Do I Need Help???

Usually I would feel my period symptoms starting 2 weeks before my period. My period is supposedly coming but I don’t feel any symptoms. My emotions have been every where (I’ve been crying a lot) but also that may be due to the fact that I’m off my psych meds. And sometimes I have weird cravings of things that I hateeee eating (like tomatoes and pickles) but I would only crave it for like a day, then I’m totally repulsed by it. I don’t feel any minor cramps or sore nipples or nothing. Does anyone know what’s going on? I’m 18 so is my body still changing or something? This is creepy😬😬😬