Okay so I was lieing in bed and I dunno,
I guess I was bored and was watching some T.V. and decided to hold my breath for a really long time and kept doing it a few times.

After I stopped,
my heart started racing and it hasn't stopped for maybe an hour now.

It was really fast the first 20 minutes,
than it became slower-
like maybe 9 beats every 5 seconds by the hour.

I'm afraid that it won't go away. =/

What can I do to stop it?
I got up from bed (it's 12 AM right now)
and just walked downstairs.

I need sleep tonight!
Tests start early tomorrow.

Please help!

Thanks.