Do you take any multivitamins or supplements? A lack of Magnesium can cause a rapid heartrate. It can also cause depression, sleep problems and other symptoms.
Many doctors will not check magnesium levels, although we do not get enough in our diets. And it's possible that you depleted your magnesium with the "common cold" and the sweating.
When we perspire, we lose Potassium and Magnesium and when we do not replace these minerals, the body reacts with rapid heartbeat, muscle spasms, etc.
On this forum, we often recommend seeing your doctor. But, first, you should try the Magnesium. Some say Magnesium Oxide is best, others say Magnesium Glycinate. Whichever you decide to take, at least get some along with Potassium.
Wishing you good health
The hospital would not have given you an injection to slow your heart rate down without good reason. Your heart must have been racing extremely fast. Did the ER.
Cut out the smoking completely, and keep your alcohol consumption to the legal limit. This is no good for your heart, your high blood pressure, or your headaches.
You still need to go back to your doctor to check your blood pressure over a few weeks to see if it has come down to an acceptable level and has stabilized. It is normal for blood pressure to get higher than normal if you are running and racing and extremely stressed, but it should come down to a normal level with rest.
Cut down or stop drinking caffeine drinks that includes fizzy drinks that contain caffeine because these are stimulants.
I received the injection after I guess trying to do to much after getting a cold or flu from a friend I was constantly walking which was tiring and had my heart rate up then we had drinks smoked and left in a rush to get home walking which is when my head rate went crazy I went to the ER and that's when they gave me the injection
You should make an appointment and see your doctor and be referred to a cardiologist with regard to your racing heart. This needs to be thoroughly looked at as you may have Supraventricular Tachycardia. This is when the heart rate is extremely high and why you had to have an injection to slow the heart rate down. The symptoms that you experienced after the injection like you were about to die are to be expected after this type of injection.
If you get an episode like that again that goes on for 10 minutes and does feel like subsiding contact the emergency services. The paramedics will be able to monitor your heart and take to the hospital if the heart rates does not begin to settle down.
If you start getting these frequently the cardiologist may prescribe medication and run tests to find out why the heart goes so fast.
Tell your doctor that you have had this again. The doctor should monitor your blood pressure over a period of a few weeks and if it is persistently high, he is likely to prescribe medication for hypertension. In the meantime, cut down on your salt intake.
Best wishes.