What Causes Skipped Heartbeat And Vertigo?

I am almost 38,relatively healthy, not overweight but I could stand to loose about 10/15 lbs. I stay active running after my 2 kids and helping run a business with my husband. I never feel stressed or overwhelmed, handle conflict well, no depression or negative thoughts. About 2 years ago I had a few episodes where my heart skipped a beat and then when the anxiety kicked in, my heart would race. I wore the heart monitor for a week, had 2 ekgs, chest xray, blood work, hormones tested, my thyroid tested 3 different times (only 1 first time test, the enzymes were elevated). I still have the skipped heart beats, but I started to notice when it happens. When I bend over, or my sitting in my desk chair leaning over, or when I turn my head/neck to the right. I sometimes feel off balanced, not dizzy or like I am going to fall down, but just a general feeling of being off . Sometimes I have to blink and blink to make my eyes focus, as I wear contacts, a little like fuzzy brain. I also bought myself a good blood pressure machine and for the past week, I have been tracking my BP. Totally normal but I am always elevated when I go to my dr so one dr suggested I have high BP. Do you think this could be a thyroid issue? I am tired of thinking what is wrong with my everyday or enviromental as one dr said and put me on depression meds. Which didnt work.