I’m so emotional help

I got my period and i’ve never ever had cramps like this and i also am just so so down. like there’s absolutely nothing wrong in my life, my boyfriend makes me so happy (we’re doing long distance so that kinda sucks but it’s going well) and i’m not sad because of him and there’s nothing else wrong. girls help!! does anyone get depressed when they’re on their period this has never happened to me and i’m so scared.