Should I test? CD 27 Spotting three weeks after period

Au’Bri • 🤰🏾Due🥰 12/2020👶🏾

My cycle is very irregular so I am typically unaware of when I ovulate and when my next cycle is due. I have been a bit promiscuous this month. I had two day of light spotting. And had unprotected sex about 3 weeks ago. Should I test?