confused

Bit of a long one... 
So my dh and I have been ttc and bd every other day since end of my af.. during the tww I was having mild cramps (nothing like af) had a pain in right side by hip area lasted only a minute, took a test and had a what I believe was a faint line (could of been evap), af was late by a week.. didn't have any normal af symptoms.. normally have diareah and bad cramps and crave sweets/ chocolates etc.. 
Checked my cervix and had a spot of brown blood.. nothing else.. following day I checked cervix again (high and soft) and brown blood.. wore a pad and nothing on it all day... following day (day 2) I had the lightest bleeding when wiped which never made it to pad.. pinky/red colour no clots.. day 3 was the same, now it's stopped all together? 
My af is normally heavy and have bad cramps and diareah.. taken a test and negative. What is going on with me?