Missed Ovulation?

First month 'trying'... just came off birth control and cycle was normal.. I've been peeing on ovulation sticks since my fertile window would of opened and did bd before and during. But each day the test comes up low :( not sure if that means I'm not ovulating this month or I'm lucky on our first try... it's hard not to constantly think about it. Started feeling nauseous and slight cramping this week. Fingers crossed.