Implantation bleeding

Not sure if this is the right place to ask. But I’m so confused, my periods are not usually irregular. So Monday the 4th I finished my menstrual cycle. We implanted on Saturday Sunday and Monday. I was ovulating Saturday. Then comes Thursday, I started spotting very lightly and come the next day the flow was much heavier. Basically seemed like my cycle started again. I’ve tried googling everything. It does not seem like implantation bleeding but every says that everyone is different. Just trying to see if I still have a chance.