Severe Disorientation And Vision Pulled To Left. Have Anxiety Issues And Also IST. What Could This Be?

Hello, Im a 23 year old male, I have an existing heart condition, IST (inappropriate sinus tachycardia) which im not necessarily sure if thats whats really wrong with me, but im not the doctor. I also have high anxiety isssues on occasion. And my cholesterol and triglycerides are high. I am having some bizarre disorientation episodes. It usually occurs when im drinking soda or something, but this may be unrelated. Its a sudden and complete disorientation, where if feels like my brain is vibrating, and my center of gravity and vision pull drastically to the lower left. Its always in this direction. It has no pain associated, headaches, or noticeable heart abnormalities. It happens when I am calm, and comes on without an warning. It hasnt really lasted for more than a second or so, and is usually just the single episode. its has been going on for possibly 7+ months without much change. maybe once every other day or twice a week I will get these episodes. It feels like it may be getting worse, but im not certain because I do have anxiety problems. it s kind of scary when it happens, and I m worried it may occur when im driving, and cause me to get in a wreck. Any information or help is very appreciated!