Crazy

Ok so I was post to get my af on the 26 but out of no were it came on the 21st SO AND I MADE BD ON THE 20th then out of no were af came is what I'm guessing well my cycle last 7 days but this time only 4 like I kind of stop bleeding on the 3 day and today still no more bleeding sorry tmi and I been having diarrhea like crazy tmi sorry can so body give me so info any body else been threw this we was Ttc but I though af so I took my self out the game for this month