The Wrong Group?

So my roomies and I were out Pokemon hunting. More specifically we were out looking for  raids that had legendary birds in them. Specifically the Zapdos as I hadn't yet had the chance to go catch one and the bird is only in the gym for like a week or so....and the week was already half over. :S 
Today was my first day of having time to go venture out. So me and the roomies (who've already caught their birds) went out hunting.
And found a gym that was under raid that had a ton of time left on the clock for us to be able to wait and gather a crowd of people in order to fight the legendary bird.
-As you can't take on these birds by yourself, you need a lot of people to help-

And let me say....the group that ended up gathering, like 9 of us....
Had such a weird energy/aura about them.
It was just an odd mixture of people.
That wasn't quite the nails on a chalkboard feeling, but I was definitely looking forward to fighting the bird and leaving because I didn't want to stick around too long.

Unfortunately...hanging out with that group for the time that we did....
Must have been too much for me because I've ended up with a headache. Which is NOT fun. 
*exhales* 
It may also be partially caused by me actually attempting to take a nap after work, after many days of being unable to get enough sleep....

But I'm thinking it's mostly the odd energy of those people that just caused issues.