How long did it take for you to get a positive pregnancy test?


I ovulated on the 10th or 11th this month and I have been feeling pregnancy symptoms for over a week now. Super nauseous, tired, moody, nipples slightly hurt. But I've taken at least 10 tests and all were negative! I was supposed to start my period today but it's never on time. I feel pregnant! What's going on?! This would be my third baby if I were pregnant so I know the symptoms. Getting frustrated already!