Is this correct about my heart?

Symptoms: slight chest pain mostly on the left side not in the middle and it does NOT wake me up
feeling like I'm gonna pass out
on and off pain on the indent part of where the chest and neck meet
leg weakness
headache
sometimes I'll get tough breathing but not to the point where I'm gasping for air

I used one of those heart rate apps on my iPhone and I get different ones like I'll get 101, 29, 71, 80 so i don't know if it is accurate or not. I did my own for 30 seconds and multiplied by 2 and got 88.

but i don't know if something is wrong does it sound like anxiety or a heart issue?
btw I'm 15 and 122lbs and have been healthy all my life. This started a year ago and I'm really noticing it now. I ask my parents to take me to the doctor but my dad says I'm being too much of a worrier and that nothing is wrong with me. What would heart problems feel like if I did have them?

Sorry, but no one can diagnose a heart problem just from a description. It might be something cardiac related, or it might be heartburn, or it might be several unrelated things. There's no way for us to tell you.

Have your family GP do some testing on your heart. Depending on his findings he may want to refer you to a cardiologist for additional test work ups.
In all, he would probably do heart rate and blood pressure monitoring,
an electrocardiogram (EKG), and possibly a heart stress test and an echocardiogram.
With due respect, neither you nor your Dad are medicos so act now,
better to be SAFE than SORRY!

A. When it comes to the heart, better safe than sorry. Go see your doctor.

B. Don't freak yourself out though. It is more than likely anxiety (that is NOT a professional opinion, so still go see a doctor). I have panic attacks and can't tell you how many times I've thought I was having a heart attack.

C. If you are googling your symptoms, STOP! You'll scare yourself to death.

Hi
My brother has anxiety issue and he also has installed this app and get different ratings each time he check. He don't have and pain issues in chest but felt chest tightening. He went to specialists the best ones and some says it's anxiety. I believe you should visit your doctor and tell him/her what you feel exactly this is the best way as you said you have been facing this for a year now and it's always better to consult a doctor rather worrying all alone. It's possible that may be you have some allergy but again I suggest go to your doctor.