Got a positive 6 hours after a negative

Sydia

This morning after 7am, I got a negative so I keep my urine and don't drink any water or juice until 1pm, then test and both my test clearblue advance say positive, but I'm still a bit confused as every month I ovulate so why am I not getting pregnant? The doctor say we are having sex too much we need to wait 6 days to make his sperm build up, please tell me what you think we are doing wrong ,