Am I having a Heart attack?

Anonymous
So about a month ago there was this day where my body was acting extremely weird. My whole upper chest was hurting badly a long with the back of my right shoulder and I was also feeling dizzy. When I confronted and told my mom about it she said it was just anxiety. It lasted for an hour and then went away. When I had looked it up though it said heart attack which worried me since I’m under 18. I completely forgot about it until today when I was playing video games with my little sister there was a sharp pain in my right side of my chest and pain in the back of my right shoulder. My head also hurt and once again I had felt dizzy. I told my mom and again she said it was anxiety. There were times where the pain would spike up just for a moment and then die down again. I have a doctors appointment for Wednesday now but since when I look it up it says heart attack I’m honestly scared to go to sleep. I’m scared that I may die when I’m sleeping or I may die sometime this week. The thing is I’m under 18 so I don’t know why my body is acting like this and I’m not sure if it’s actually a heart attack or not. Even now 7 hours after everything my right side of my chest still kinda hurts. I’m scared and would appreciate any advice at all.
Updates
1 y
UPDATE: it was iron deficiency anemia.
Am I having a Heart attack?
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