Is this allergy related???

Today is going better though I woke up with a migraine.  Also, I haven't been hungry in about 3 days.  I have no desire to eat anything.  Today, I tried eating some chili we made for dinner, but only ate about 2 bites.  I did eat half a grapefruit later and a banana for lunch, but that's it!  

I ate a bowl of cereal yesterday and the day before I had a bowl of chili.  This is very unusual for me, I usually eat at least lunch and dinner and then a snack in the evening.  It's just really weird.  Is it related to the allergy to berries I think I might have developed?!  

I did go rollerblading today.  The weather is finally getting nicer!