Yesterday in the morning, I've been in a very stressful situation that made my heart beat extremely fast for a minute or two (because of the intense stress).

Later that day, I was having terrible chest pain for a few seconds every time I got excited or have eaten some food. The chest pain reduced a little after a while (I still feel some chest pain, bit much less than yeatetday), and then I started having a fast heart rate (even at rest) that kept me from falling asleep all night (I couldn't sleep at all because of my fast heart rate). The fast heart rate started about 12 hours ago and it's still hasn't disappeared.

Do I need to get checked? When can I expect my fast heart rate to disappear? I am a 16 years old male, if that matters. I take Ritalin on a daily basis to treat my ADHD - can I still take Ritalin right now or it'll worsen my fast heart rate? I didn't take Ritalin yesterday in order to let my heart rest from the stress, but I want to take my Ritalin today and I don't know if it's safe for me right now.

What do you recommend me to do to solve this problem?

Thanks,
-ProAgonist