No period but negative tests...

MK

So I didn’t get my period this week. We aren’t trying to get pregnant but we did end up having sex when Glow said I was ovulating. For the last week I’ve been super nauseous and even had some episodes of dizzyness., and I experienced this when I was pregnant with my daughter. Took a pregnancy test on Wednesday - 1 day before I was suppose to start and it was negative. I took another text on Friday when I still hadn’t started - and it was still negative. My question is - should I start my new pack of BC tonight? Is there still a chance I could be pregnant if I’ve had 2 negative tests? Still no period...I’m so confused!