I need someone's help

So idk what's wrong with me. I went on a trip to france with my schl and a lit of relationship drama happened and I came back feeling really crappy. The next day I was up in my room and started having some sort of attack where it felt like I couldn't breath.

That was yesterday.

Then today I was in form(I'm 13) and my form teacher gives us an email telling us that our netball match had been cancelled. After form a girl on the netball team like me comes up to me and asks me about the game I tell her wat I had found out about it being cancelled and then she tells her friend.

I checked my phone a few hours later and there are a bunch of messages saying that our coach is pissed and that she wants to speak with us on wednesday and that I'm in deep shit and that I'm really in trouble.

Now I am old enough to know that they were blowing it out of proportion slightly and that I could just explain what happened and that everything would be fine.

But I started hyperventilating again and crying and idk what's wrong with me.