Unsure...

Sunnysands
So I'm getting straight to the point. The flu has been going round and so aha the cold. 
On Monday my friend wasn't feeling too good like she had a cold and then in Tuesday it turned out she had the flu so she wasn't at school(my first day at school without her! EVER!!! Long story) Anyways I enjoyed that day and hung out with her friends,had a laugh with my crush and we talked for a bit(I can't really talk to him when I'm there) and I was happy but I was just constantly coughing and my nose was a bit blocked but j never thought much of it. Anyways Wednesday morning I woke up and I knew straight away I had the flu. And so I never went to school, but one of our friends(he is in yr 7, I'm in yr 9) messaged me and said he thought I was staying off just because my friend was off. And I said no it's cos I've got flu and he was like yeah right. Anyways this morning I woke up hoping to get to school and I thought I was paralysed. The problem is my friend is never off much and so I'm not as free to do the stuff I do at school when she isn't there. Anyways I was thinking if I feel better tomorrow I'll go in but I've got a feeling everyone is gonna judge me and criticise me and say I was faking because my friend was off and I've had a load of absent days since I started school in January(personal and long story) how should I react to this?