I have been sick my whole life and seem to catch any virus I am within range of, so I miss about 35 days a semester in high school because of this problem, I have been diagnosed with a disorder that causes saline to constantly produce in my body which ends up leading me to be sick every week sometimes or every other week, saline is actually suppose to help your body fight colds, however mine does the opposite because of how much I am producing daily, it causes a lot of sinus problems too which makes my sickness's extremely bad, I gave the diagnosis to my school after constantly fighting with them about my absences, now the problems are returning and if I miss 3 days or more the school now wants a doctors note, the problem is that my doctor is very unreliable and often times won't give us a note or it takes him a week or two which does not help my situation, I urgently need advice as to what I can do to stop the school from asking for a doctors note because I honestly can't give them one and they already have my diagnosis.