Was I wrong?

My boyfriend wanted me to drive him to his cousin’s house yesterday so he could buy a dab pen from him. Well we went inside and sat down, pretty close to his cousin when his cousin starts saying that he tested positive for COVID 3 weeks ago. He’s been symptom free for 2 weeks, but he took another test on Feb. 4 that still came back positive. Meaning he shouldn’t have been having us over at his house. When we left his house my boyfriend starts talking about how excited he was to get three vape pens and I told my boyfriend I was really upset because now we would have to quarantine and I would have to call off work and possibly have COVID. I admit I was yelling/angry about the situation, but not at my boyfriend - at the situation and the stupidity of the cousin to not tell us (my boyfriend didn’t know he had covid). My boyfriend mistook this as me blaming him and he yelled at me to shut up and started blasting music in my car. We are now in an argument and i have to call off work for at least 10 days and get a covid test. Was I wrong?