What I have experienced I never had experience before.

I was supposed to start my period on Sunday. I only had a spot twice that day with no period at all. The following day I had pink spotting with a bit of sticky discharge and again not to fill up my pad. Yesterday I still had pink spotting and at night I started to have a bit of bleeding but was more pink than red and thought it was my period. I thought I maybe was having implantation bleeding but since I rules it out. Well I just used the bathroom and had this. My pregnancy test were delivered today but decided not to test. I was having light cramps yesterday and back pain today.