So confused...need some answers

Ok so as of three days ago I was supposed to get my period...af didn't show up until later on around 5...i went to the bathroom and ughhh it was light and pink so I thought here we go again...not pregnant again...we'll i ran to the store to get tampons as I always use them....used them that evening and that morning when I woke up it was like a light period not even like spotting....now three days later i am only using one tampon a day and it's not even like a period...it's like pink brown spotting (which I never had experienced before) I don't know what's going on...has anyone ever experienced this ???