What's up with my kid (7yr old)

[MamaNae]

Oh goodness! The last 2 or 3 days he's been soooooo whiney. He bawls at the drop of a hat. He's grouchy and snippy with me and his siblings. He's whiney about EVERYTHING. He says he 'don't feel good' but provides no information besides that. He's not running a temp, I looked down his throat and it's not red or anything. He's not been coughing excessively or having a runny nose. Just moody as all get out.

Any ideas? 7 year old PMS or something? LOL (he's a boy so...but I swear men get PMS too...)