So my period was suppose to start the 13th and it came the 9th which was supposed to be the date for implantation bleeding. I’m not sure if it’s implantation bleeding or my period. It’s a very light flow and I usually have BAD periods. This time I didn’t have to take any meds for the pain. I also have bad back pain and that never happens. Im 12 DPO. Is that normal ? The flow of the blood isn’t heavy at all, I’m just confused as to what is it.