Sorry to say, Stas, it's not all that easy.
I had to apply for consideration in semester 1 of last year because I had a fall and was severely concussed for 2 weeks. You need to fill out our forms with complete medical certificates and your doctor must also fill out your forms. Then you have to take them to the relevant faculty. I'd strongly suggest emailing your head lecturer(s)/tutor(s) and seeing what's the G-O, because eery faculty takes Special COnsideration differently.
You will also have to take supplementary exams that occur during our poorly organised 3 weeks off. If you ask to take these ones now, but to ask permission for the marker to take your sickness into consideration, that won't happen, unfortunately.
I had A LOT of issues with my applications. I even had hospital records to say that I had an ambulance to assist me and I was taken in, but pffft the uni don't give a shit. Well, they didn't for me. I strongly believe they pick and choose who they want to give consideration to, depending on the illness.
I'm so sorry to freak you out Stas, but this is the reality that I faced.
All that aside, i DO strongly suggest you apply for consideration, because you're obviously sick and I can imagine how much you're freaking out. But email your tutors/lecturers first to get their opinion.
Good luck and I hope u feel better!