Any idea? (TMI!!)

Okay so I was due for AF on Sunday. However Friday evening I started spotting a little bit just when I wiped. I just figured I was getting AF a little early. On Saturday it was still spotty and just when I wiped. I went ahead Saturday and Sunday and wore a tampon at times however each time I took the tampon out there really wasn't much on it. It was mostly just at the tip and mostly had a darker color and brown. Monday was still pretty light. Tuesday I didn't need to wear anything and it was only there when I wiped a little bit on the toilet paper. None of this has been my normal color or consistency af. This morning (Wednesday) the picture shows what was there when I wiped. It was very mucusy with a pinkish red color and as you can tell with my finger it was stringy. My breasts are a little tender and my back has been sensitive. I didn't want to over think anything but I also know that this isn't normal for me. Any ideas what's going on? Thank you!