I am sorry to hear about your symptoms. I strongly encourage you to arrange an appointment with a primary care physician
. You will need to undergo a thorough, in-person evaluation in order to determine the cause of your symptoms.
In general, your heart rate increases during times when your organs required additional oxygen and nutrients. This can occur during exercise, fever, pain, anxiety
, dehydration, or illness. Given that you have not been eating as much and have had diarrhea, it is possible you are dehydrated, and your heart rate has increased to compensate for this.
Your heart rate can also increase abnormally during an arrhythmia. Some examples of arrhythmias include atrial fibrillation, atrial flutter, atrial tachycardia, and AV nodal reentrant tachycardia. During arrhythmias, patients can experience anxiety, palpitations, lightheadedness, and loss of consciousness. An illness can often trigger arrhythmia. Although some arrhythmias resolve on their own, others require medications or interventional procedures to control them.
Given the severity of your symptoms, I recommend you arrange to see a primary care physician. A typical evaluation will include a thorough history, physical exam, and EKG. Depending on these results, you may require IV fluids. You may also require a 24-hour EKG or ultrasound
of your heart.