Dehydration headache

I'm getting this headache because I think the M&M's I ate on this warm afternoon is causing my head to ache. Maybe I didn't wash my hands and something got into my system. I did have a sandwich. I think it's mainly from the gatorade, which I'm still tasting underneath my stomach. I wish I could not have a headache, whenever I read or do something. I think it's just asking for too much.

EYY