I have shortness of breath, dizziness, low blood pressure, and have had endocarditis from a bacteria infection I got when I had 5 teeth pulled., and heart palaptaions. ..What could be wrong

Heart valve damage. Infectious endocarditis can cause damage to heart valves, presenting the symptoms described. This can be a very serious condition. See a physician asap for a diagnosis and proper treatment.
Your . Your clinical presentation is consistent with septic shock secondary to bacterial endocarditis. If that is indeed the case, you should immediately go to the hospital for additional tests (blood cultures, echocardiography) and treatment (iv antibiotics).