6 weeks since last period... Should I test?

Amber • Teacher. Married to a teacher. PCOS. Hypothyroidism. Working on myself.
I had my last period 6 weeks ago. My periods are usually every 28-30 days. I took a test the day after AF was late and it was BFN. For the past 2-3 days, I have had very very very light spotting. Could I be pregnant? Should I test?