Last Month I Had A Regular Normal Period It Came

Last month I had a regular normal period it came 03/08 -03/11 this month it was supposed to come 04/07-04-11 but instead on 04/06 I got what I thought was the beginning of my period but it was different it was very light and like a brick color with a jelly strongly like mucus and at times when I wiped it was a bright pink...today is 04/07 and it started off the same as yesterday just a lot slower and now I don't need a pad its only brown when I wipe and a certain times there is nothing....I have been doing research and I would think its implantation bleeding but I'm not sure...my breast or tender and a little painful and I have been having a little bit of cramiping at the very bottom of my stomach but not much...