Implantation or just a bledding

I think I had my ovulation on the 25th and that day I was intimate with my husband and he came inside by accident. Today is 29 and I had a little bleeding and I feel a little cramps nothing else. What do you think? Has it happened to them?

It could be implantation or something else. According to research, it is a very short time for an implantation and I am almost certain that it is nothing but I am like with the idea in my head. 😅😅😱