?????

Savanna

so on cd16 I had this spotting. I had ewcm so I'm pretty sure I was gonna ovulate. few days later (3-4dpo) I came down with a cold. sneezing, runny nose, slightly sore throat. It's been gone for about a week now, my period is late! by about 4 days if spotting was ovulation. So was itt truly ovulation & I could be pregnant? or what else could it be? should I take a test?