Can uncontrollable crying be related to my periods?

Mood changes yes. Many women experience mood changes at menses. When the period starts there is an abrupt drop off of both estrogen and progesterone. This is called of pms or pmdd (premenstrual dysphoric disorder). Its common that little things can set off a crying spell. If the uncontrollable crying is affecting your life or your relationships you may consider a mild anti-depressant from your md.