I m in the pill and have just finished antibiotics (in the form of a vaginal gel) for a PID. I thought I was getting my period today (cramping, bloating, lower back pain, etc.) except when I used the bathroom, there was no blood on the pad, but there was a clot of dark red blood stuck to the tissue after I wiped. I used the restroom again later and this time there was a gummy, pink substance on the pad and no red blood to speak of. What could this be?