(Concern) My heart is pounding rapidly, and I feel a tightness in my chest.

When I was pregnant, I had very severe morning sickness.

I almost only drank sports drinks and kept vomiting until 8 months old. As a result, I lost weight down to 35 kilograms. The hardest part at that time was not vomiting, but feeling like my heart was about to jump out of my chest, to the point where I could see my heartbeat. Then I couldn't breathe. The child is in first grade of middle school, and it's still the same now. When tired, stressed, or overwhelmed, my heart beats too fast and it hurts.

Could it be tachycardia?