should I take a test?

I know it's totally idiotic, but my boyfriend and I have sex using withdrawal as a form of birth control. Except for this month when I was ovulating, we used a condom. The day before my period was due, I had spotting, I guess? It was sort of like a super small period that wasn't heavy and last 24 hours and now it's gone and I'm 5 days late for my actual period. Unless that was my period, I just don't know. I also have been sick with the flu since before my period was due, so I've had a terrible fever and I've been on antibiotics, steroids, etc. I'm also super scared/stressed and I'm not sure if any of these factors would delay my period or if I already had one. Opinions?