okay ladies, I need help

♒️👽💫🔮🎮
So, on this app it said my cycle was supposed to start Tuesday, this past Tuesday, and on another <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">period app</a> it said for Wednesday. I've been off birth control for two months, but my last cycle began as usual. I have yet to begin my cycle, so it's about four or five days late. Last Monday or so I took a .88 cent pregnancy test from Walmart, because a week or two before then I went to the restroom and a small light pink dot was on the toilet paper. Lately I've been feeling nauseous! I just don't feel good and I've been eating a lot of protein and food to keep up with my highly physical demanding job, so I highly I'm feeling sick and dizzy due to my job. So how long should I wait to take a first response? Anyone ever experience this and was actually pregnant ? Opinions? I'm currently on my break and I just want to go home I'm feeling so shitty! I don't know if it's just my period being late - I honestly don't know what to do. I am frustrated lol. Thank you!!!