Symptoms of endocarditis can vary from person to person. Endocarditis may develop slowly or suddenly. It depends on the type of germs causing the infection and whether there are other heart problems. Common symptoms of endocarditis include: Aching joints and muscles Chest pain when you breathe Fatigue Flu-like symptoms, such as fever and chills Night sweats Shortness of breath Swelling in the feet, legs or belly A new or changed whooshing sound in the heart (murmur)