Hi. I am 19 years old female. My height is 157cm and weight 50kg. One night I started to feel very anxious all of a sudden, felt hot flashes and tingling and very scary feeling my heart will stop at any moment. My pulse was way above 100. My mom called an ambulance, but by the time they came I calmed down a bit and when they arrived and checked my blood sugar and pressure, said I look ok only scared and that's all. The next day I was feeling pressure in the head weakness, and had a heart rate of about 70 all day long (my normal rate is 60). I went to my doctor that day and he sent me for blood test. All blood values came back normal and I was told not to worry. Since then, every day I had a pulse of 70-90 for a whole day and felt very anxious. I slept well and felt very well after I wake up for about 2hrs and then it would start again.. About a week ago I started to wake up at 4 in the morning with my heart pounding, shortness of breath, panic and feeling of tired heart (similar to the feeling of really sore muscles after exercising) and fall back asleep only in the midday, or don't sleep at night at all. I then went to the other doctor who made heart and thyroid echoscopy, EKG, lung x-ray and another blood test. Everything came back normal accept there is minor valve prolapse in the heart which was there from the birth and potassium levels were 3.8, which he said is little low and may or may not have caused the symptoms. Potassium levels of the first test were 3.5, but previous doctor did not say anything. I also recently had tooth infection (abscess) which was treated with antibiotics but I need a root canal as well. My cardiologist said the heart symptoms could also be caused by this infection. Did she mean sepsis?? Because it certainly feels like something very bad is happening in my body. I had 2 small root canal treatments already but my dentist refuses to do anything until I get fully tested as my legs start to shake badly when she injects local anaesthetics (this also sometimes happens at night when my heart beats very fast legs start to shake). My doctor says all tests needed are done and I look healthy accept unexplained trachycardia, but I still think there is something very serious happening. Please help, doctors in my country (Lithuania) are not very careful, even in private hospitals.
p.s: I was prescribed bromazepam for when heart rate is really high and valerian root drops for everyday. All valerian does makes me more tired and bromazepam used to work for the whole night and the day after, but now I wake up with my heart racing even after taking it before sleep.