HELP missed period & negitive test.

Vera

Ok so I had my last period 58 days ago!

I took a test on Saturday 7/9/16 and it was negative. My period cycle is usually 40-43 days. The longest I ever gone before starting my period was 43 days. But today I am on day 58!

Is it possible for my test to have been invalid?

I would think that if I was pregnant I would have someone known or felt it by now.