Should I tell my boyfriend?

Me and my boyfriend don't live together. But I'm over everyday and can't remember the last time I slept at my own house. And its been 8 months. His roommate got a girlfriend and they are in and out of the apartment. It's my boyfriends apartment but his best friend lives with him. Neither of us like his girlfriend because she is changing him for the worse.

Anyway, I've been sick with a fever, headache, nauseous/throwing up, etc. So I didn't go to my boyfriends sports game tonight and stayed at his place (because again I always sleep at his house)

His roommate gets home with his girlfriend and her friend and he is Clearly annoyed. Then he said something that I couldn't hear in the beginning but then said "when she first started getting here..something I couldn't hear..it was great because her country music was loud..something I couldn't hear" and then he said something about hearing it and they all laughed. It just made me feel bad and unwanted. I mean, my boyfriend wants me here but I just don't know why they had to be rude.