Panic attacks
Panic attacks can easily be confused with heart attacks because they show similar symptoms: Anxiety, tightness in the chest, sweating, severe palpitations, dizziness and weakness. (According to UPMC) Again, it is particularly important to check these symptoms with a doctor
A sudden blow to the chest
If you have the feeling that your heart is beating irregularly and you can feel the heartbeat, then this could be a symptom of atrial fibrillation. According to the AHA, there is an increased risk of a stroke. Please go to the doctor and ask for clarification!