Hi Gina,
You are probably feeling abit anxious because your cousins are there. I know if my boyfriend has his mates over at my place I worry that I'm going to have an attack when there here. And then I worry if I have an attack what will happen and then I keep thinking other things so it leads on and on and from this I put myself into and attack. Just try and do your breathing and even if you have to just excuse yourself and say you need to go to the bathroom and sit in there until you feel abit better. That's what I do.
I hope you are feeling better now,
Ruby.......