TMI, understanding this bleeding?

​So every month for the last 6. My period has come on the 28th lasts for 5 days, 

​This month I had brown discharge on the 26th, on the 27th and 28th I had what I thought was my period, from the 29th I've had a very sticky mucus discharge from a brown to a very light pink, not a lot but enough to wear a liner still have it tonight the 1st,