Hi Denise Davis,
Thanks for writing your query.
After reading your post it seems that you are either having Migraine
or Cluster headache
These can be associated with discomfort in eyes as mentioned by you.
Some common factors which can trigger them are :-
1. Change in temperature.
2. Lack of sleep.
3. Missed meal.
4. Physical/mental stress
6. Dairy products.
7. Foods conatining MSG.
You can judge yourself which one is triggering you problem and should avoid them.
If the problem persists get yourself examined by a Neurophysician.
Anti migraine medicines can be planned after examination.
I hope this is helpful to you.