Feeling slightly discouraged

Mercedes

So I went to the er last night and got a negative blood test. I'm on day 3 of being late. I've never been late I've always had a regular cycle. So this is really throwing me off. I honestly believe I ovulated late and this is the reason for no period pregnant or not. If I ovulated late originally would have been 02/20 would make me 4 weeks 3 days I believe it I ovulated around the 25th of Feb. So I'd only be 3 weeks. This would explain all the negative test. I'm not going to say I'm not pregnant until AF decides to show up. I'll keep yall updated in a few weeks. Around the 20th I'm going to take another test if AF isnt here.