Period issues

So my baby is almost 14 months old and I have been on my pill since he was 6 weeks old. Last month my period came 3.5 weeks early and had some clotting. I took a test because it was so off and it was negative. This month it came a week and half early. I had pain in my left hip, lower back, pelvic bone, and severe cramping. It was only heavy one day and the rest of the time it was bright red/pink blood! My period lasted a week and was completely gone yesterday. My husband and I had sex yesterday afternoon and it brought on some spotting but was done by the evening. Today I went to the bathroom and wiped and found this! What the heck is it? I have attached 2 pictures of the color of blood, and the mystery item! Help! Has this ever happened to you? What is it!?