Could I Be Pregnant If My Period Is Late, I Feel Nauseous, Need To Urinate More?

I was supposed to start my period on the 23rd. My periods are normally on time or early. A week ago I started feeling nauseous. But I didn t think too much about it. I ve had to use the restroom more than usual. But, I took 5 pregnancy test. 3 we re negative and 2 we re positive