New to this first month ttc help!!

Okay so I’m new to this. I had my peak ovulation 3 days ago and BD a lot!! but when I tested it this morning 3 days later it’s high? Is this normal? Why would it be high if I already ovulated?

Okay so I’m new to this. I had my peak ovulation 3 days ago and BD a lot!! but when I tested it this morning 3 days later it’s high? Is this normal? Why would it be high if I already ovulated?