Today I walked in the house and got very dizzy and my heart started beating like it was about to pop out of my skin. I sat down but couldnt focus.  I wore an ankle brace all day because of a sprain but it wasnt that tight.  I stripped off my jacket and took off the brace.  The entire episode lasted about five minutes but it was very scary.  This happened to me once before when I was pregnant and took a pretty strenuous walk.  I was very low key today because of my ankle.  What was that all about?
Thanks for your question on Chat Doctor. I can understand your concern. In my opinion, we should rule out arrhythmia (rhythm disturbances in heart) in your case because arrhythmia can cause similar kind of symptoms. So consult cardiologist and get done 1. ECG 2. 2d echo 3. Holder monitoring (24 hours continuous recording of ECG). You may need anti arrhythmia Chat Doctor.  Don't worry, you will be alright with proper treatment. Hope I have solved your query. I will be happy to help you further. Wish you good health. Thanks.