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The result is something physicians call “heart block,” which can be mild, moderate, or severe. Heart block from Lyme carditis can progress rapidly. Patients may experience light-headedness, fainting, shortness of breath, heart palpitations, or chest pain. Patients with Lyme carditis usually have other symptoms such as fever and body aches, and they may have more specific symptoms of Lyme disease, such as the erythema migrans rash. Early treatment of Lyme disease is important and can prevent complications. Irregular periods are one of the most common problems obgyns treat. If this is one time problem it usually resolves on its own. If this is a recurring problem you should be evaluated. If there is a concern for pregnancy then do a home pregnancy test . Read more There are lots of causes for abnormal periods. There are many options available to help regulate the menstrual cycle. 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