Advice please.?

Cat • I have a six year old son named Zayn and a newborn daughter, Evelyn.

According to my calendar on here I ovulated 4 days ago. My so and I were doing the deed when we realized I was bleeding. It’s super light and all, so I know it’s not my period. Especially since it isn’t due for another ten days. So. Is this normal.? I know it’s too soon to say it’s like implantation bleeding. So that’s out. Help, please.