I'm sure it's nothing too serious. You're probably right about the headache being linked to your illness.
Staring at a computer moniter for a long time can strain your eyes, which can make a headache worse. So I suggest you rest asap, or take a quick break. ^^
Hi, hi! Sorry for not messaging you today, the day turned into one of the worst days I've ever had and I haven't been online much or even opened my 3DS >.<' Sorry - Tomorrow will hopefully be better