Period Late, negative tests! 😔

Guys! So my period is late going on 10 days late, I've been trying ttc for like 2 months, so I don't think I'm pregnant it might be too soon, but I've never ever been late on my period before, I haven't done anything differently than I was the months before, my diet is still the same, etc. on Monday I got really sick, bad headache, nausea, vomiting, really horrible stomach cramps so I went home to test and still nothing. I've been testing for like 3 weeks now and all tests are negative 🙁🙁 but I'm getting really impatient that my period is so late, and my tests are still negative. This happen to anyone else???