It is called tachycardia.
at this age the chances of any pathology is less with no previous history.
But still it is advisable to take proper check up.
even hyperthyroidism can cause such symptoms.
Please have good sleep and wake up in morning to have exercise and yoga
cut off all foods from outside
have your blood hb% check also blood pressure measured.
Till the time take a glass full of full cream warm milk daily.
If you have been feeling a fast heart rate at night for the last two weeks, it is recommended that you seek medical attention to determine the underlying cause. Fast heart rates can be caused by a variety of factors, including stress, anxiety, dehydration, caffeine, or an underlying medical condition.
Since you have mentioned that you have iron deficiency and euro d and are taking medication for it, it is possible that these conditions may be contributing to your symptoms. Iron deficiency can lead to anemia, which can cause an increase in heart rate as the heart works harder to compensate for the decreased oxygen carrying capacity of the blood. It is also important to note that some medications, including iron supplements, can have side effects that affect heart rate and rhythm.
In any case, it is recommended that you speak with your healthcare provider to determine the underlying cause of your symptoms and to receive appropriate treatment if necessary. Your healthcare provider may recommend additional tests, such as an electrocardiogram (ecg) or a blood test, to help diagnose the cause of your fast heart rate
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Do lifestyle modification. Engage in regular physical activity (at least 150 mins/ week). May try yoga. Take balanced diet with ample vegetables. Take one seasonal fruit daily. Go to bed early. Control screen time.
Avoid using earphone
take easily digestable food
do morning exercise and yoga daily
avoid all food items from outside
do not take excess salt in your diet
take pan 40 once daily for next one week.
Since your ecg is normal I don't think echo is required at this stage. If your anxiety continues you may need an anti depressant. Meanwhile you can get your thyroid, vitamin b12 and d levels checked.