Hey girls a question

I'm now late for af still have the cramps and nauseous. I tested today and digital said no. My cervix is really high frim/hard and closed. I still have the white watery creamy cm. when should I test again with an hpt? I'm 3 days late and my temps are still above my ovulation spike. I ovulated on the 20-21 confirmed by a digital opk and bbt. So when should I test again? How many have experienced this? And what was the outcome?