Work Worries

So today I missed a few hours of work due to my head pounding.  This is the first time I missed work due to this condition other than pre-scheduled doctor appointments.  The other issue is due to the glare at work, bright, lights, and my head in constant pain it is easier for me to work from home where it's dark, I can wear my sunglasses without anyone saying anything and I have ice packs. So I have probably been abusing their flexibility to work from home.
This is so frustrating!  My boss has been understanding and flexible and so has my peer.  But, I really need to be at work.  I guess I am lucky I still can work where many can't.  I just sent a note to get FMLA paperwork just in case. 
At least now my headache is only 4 out of 10, but that can change at any moment.
 
I'm not going to say "Why Me"  but I am going to say "I can't believe this is happening".