I was expecting AF on 3/2/15(from app-knowing it's an estimate) . Has not yet arrived. I don't usually use OPK's to track ovulation. So; I don't know when and if I ovulated. I think I did bc I felt twinges/pain a few days ago. Took a pregnancy test yesterday. It was negative. Don't know what to think.. I am bloated, uncomfortable. Any insight would be appreciated. Thanks.