I’m confused 😐

Soo my period is supposed to be coming today and my checked my cervix and it’s high and soft and white discharge just a little bit I am having Stomach cramps/pains and cramps some what the same as pms I am Constipated and only one breast is just a little bit sore when I push down on it can someone explain to me what’s going on 😭😭🤷🏽‍♀️ ?