Should I take a test?

I’ve had light pink spotting for a day or two at the beginning of this month, then about a week later I had dark brown/red bleeding for a day. And light spotting again so far. The <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">period tracker</a> says I’m about a week late. No appetite, nausea and sensitive breasts. I know I could just go out and buy an at home test, but I’ve done that and literally started my period the next day. Any advice?