Could I be pregnant?

I am 2 days late and I can't tell if it's from how stressed out I have been lately. I usually get nauseous eating food when I am stressed but what if it's because I am pregnant? I took a test 3 days before my period because usually I get my period earlier than the app says. The test came back negative. Then I took a test when I was one day late and it was still negative. The last time I was late for a period was when I was on birth control but I got off bc last year. Should I wait and try another test in a week?