Guess What day it is

Today is a rare occasion in my career.   I took :drumroll please: a sick day!  GASP  what the what?  It is not often I do these types of things.  I woke up this morning with a huge migraine and a fever.  It was 3:00 in the morning and I tried I really tried to fall back to sleep. At 5:15 in the morning I went downstairs to watch tv and convince myself I was feeling great!  At 6:00 the lastest I think we could have possibly "called" out I went online and put in for a substitute.  This is shocking for a few reasons

1. In our school, if you are a "Child-specific" paraprofessional you are assigned a student in the morning and a student in the afternoon.  This is not my favorite way of working but I digress a bit.  I knew the afternoon para I swap students with was going to be out as well. We were already going to be down 1 person how could I do this to the students, the team, the oh my forget it I am sick!
2. It also meant I would have to cancel babysitting after school. I mean I could have picked the boys up from the bus stop today. The problem with this is one they are in the same school district and I would feel dishonest working in the afternoon, but I was going to leave these parents in a tight spot of sorts. Except they have family close by that can step in when I am unavailable.  The second reason is umm I am sick.  See how this reason always comes second?  Ya,  I am noticing that as well.
3. I wasn't feeling well yesterday but once I got to work I forgot all about it interestingly enough my morning student was absent. Must have been then 100.2 temp she went home with the day before.  So I was concerned that once I called out I would start feeling better and then I would be a "faker"  truth be told I hated school so much in fifth grade I faked sick a lot.  Guess what it is 10:00 and while my migraine is gone for now I still have the fever and just blah.

I have a feeling this has been bubbling for a while and maybe I should have just tried to nip it in the bud right in the beginning.  How often do we push ourselves though?