Kids can learn to be quieter around you, just explain simply that your head starts to hurt and that calm and quiet makes it feel better.. Let them know that you still love them and they can be normal loud when outside playing.

It might be good to run this past husband before you talk to the kids though, just so he's on board and will back you up with reminders if it begins to get too loud , so you don't have to be the bad guy all the time..

And same goes for close family & friends. Doesn't hurt to mention that crowds & a lot of things going on make your symptoms flare up. They may forget sometimes but if they don't know at all, they can't make any attempts to help you feel better..

ear plugs are suggested often on the forum too.