no signs of af

hey ladies. my AF is 3 days late. I'm usually very on time. there has been a couple times that I was late. but a very few. and that was due to stress. ...but throughout the last 2 weeks I had random cramping mainly on my left side. there was an inncodent where I got kinda dizy. and a couple nights I felt a little nauseated. ....usually b4 AF shows my boobe get really sore and that hasn't happened. and I get really water cm the week leading up to af. that hasn't happened either..and today im very very bloated. and something else that has stuck out to me is my mouth. like usually I try to keep my mouth shut about a lot of things just to keep peace but here lately the last week or so like I get so aggravated and I just blurt out whatever is in my mind lol that could

just be me though.....so I took a test yesterday morning with flu an it was a bfn(frer) .....so I'm just wandering...is it possible that it is too early to test??