Before you get all panicky, you should feel your pulse, does it feel like a regular rhythm?

How to feel your pulse:

Put your finger on the side of your neck (carotid) or on your wrist (radial). Does it seem regular; not super-fast or super-slow or does it skip a lot of beats? Can you tell when the next beat will come?
A regular and normal rate is between 60-100 beats per minute (check it on your watch).
If your pulse is very fast or very slow or if it is irregular and unpredictable please get it checked by a healthcare professional ASAP. It could be due to atrial fibrillation
Atrial fibrillation isn’t usually life-threatening or considered serious in people who are otherwise healthy. However, it can be dangerous if you have diabetes, high blood pressure or other diseases of the heart.