3 days late no symptoms of Af starting & 2 negative tests

Hey I’m 3 days late for my cycle, I mean literally there’s no sign of AF starting. I’m not stressed out I’m actually just becoming happy with myself and life I feel good. But there is some slight symptoms I’ve noticed ... like I’m sleepy a lot when I’m at work and things are slow I’ll dose off standing up! When I’m home I’ll catch myself dosing off. I’m getting headaches , if I don’t eat I feel light headed and sleepy. When I do eat something I feel sick to my stomach, and feel like I have to poop but nothing but pee comes 🙄. Sometimes my mouth feels watery when I burp I sometimes throw up in my mouth some. IDK what to honestly. I’m so tired of being patient. My cousin told me to test again Monday.