Chest pain, rapid heartbeat

Since the day before yesterday, my heart has been beating a bit faster, so I have been monitoring it continuously and was planning to go to the hospital if it persisted.

I felt a little better this morning, so I didn't go to the hospital.

But after dinner time, it wasn't just the heartbeat that was a problem, but I started experiencing chest pain.

There is a frustrating and stabbing type of pain, and the heart rate has improved and worsened, but

I think it has recently been around 90 to 140. (measured with Galaxy Watch)

If your heart hurts or beats quickly, your whole body feels somewhat cold, you have a slight fever in your head, and you sweat.

I'm still a first-year high school student, so I don't think it's a time when I would develop heart problems...

I have had depression originally, and recently my stress has become severe, but I've never experienced anything like this just from stress alone in my life...

There is no cardiology or heart specialist nearby, so I am thinking of visiting a general internal medicine clinic. Will they diagnose me even if I go to a general internal medicine clinic?

And if it's not a heart problem, what kind of illnesses typically cause these symptoms?