I'm cooked

So, last night i had this terrible headache that just kept evolving, by the night i enden up feeling like shit, but i couldn't do much about it. 
Now, in this morning when i woke up i ended up feeling the same, i didn't feel better and i decided not to go because i seriously couldn't do shit.
The problem here is that i had a 2 hour long math exam that could only be made on a specific platform called "Sofiaxt" or smth. I sent a message to my teacher letting her know about this and she only told me that i couldn't do it at my home cause i had to be there. 

So i didn't go to an extremely important exam, i don't have any kind of paper to justify my absence and i'm most certainly gonna fail math