Why does my friends think I’m faking sick to get out of doing things?

I was fine yesterday but my nose started to run last night. I was coughing nonstop and my throat is a little soar. I still feel like crap and I got a bit of diarrhea. I was on the toilet for 20 minutes. My friend said that goes away in its own. The party isn’t until 6pm so if I feel better by then, come by.
I shouldn’t stay home because of a little cough or a sniffle.
I told her I’m not coming and I don’t want to get anybody sick. My friends convinced me to come and so what if I have a little cough. No reason to miss out.

I put my foot down and told them I’m sick, I have a stuffy nose, a little soar throat, cough and a bit of diarrhea and I’m not going. They said I’m just not making excuses to not come, go anywhere or meet guys.

Why does my friends think I’m faking sick to get out of doing things?
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