Need some advice.

I had my period in July a week later I had light pink spotting .. August comes around 14th I get pink spotting and gets heavy this period ends on the 21 after the 15th I just had brown spotting. Yesterday I had brown watery discharge.. last night when I was sleeping I randomly woke up and felt wet went to the bathroom and all watery light brown what the heck is going on? I usually have very bad cramps and sore boobs a week before my period I didn't get that my periods usually only last 4/5 days any advice?