Hello Miodrag, and welcome to the forum. Do you exercise in the gym? Some activities, such as heavy exercising, can temporarily increase your ALT/AST levels. Please continue your treatment until the end, and let us know your viral load result after 15 days. At any rate, you shouldn't be disappointed, 75% of patients who are still detected at end of treatment, go on to reach SVR 12 (cure). The overall cure rate with Sof/Dac and other modern DAAs is about 95%, so the odds are very much on your side.