Hello, since last Thursday I have been taking Pylera. Side effects such as black diarrhea occurred and lasted for several days, however, for two days I used electrolytes with calcium at an interval of two hours from the dose, and on the first day at the same interval together with green tea and psyllium (it was 1 day, the side effects were already there). However, on Thursday the stool was less black, and on Friday it was not at all and turned into constipation with occasional, strange stools. Today also hard stools, but dark, as at the beginning of therapy, could these two days of electrolytes have disrupted the action of the drug? I have one more missed dose, I don't even know when. The question is, should I extend the therapy to 14 days to replenish these two days of electrolytes or just take the missed dose tomorrow? I'm really stressed that the therapy won't be effective and the bacteria will become resistant to antibiotics. A few bacteria came out on the gastroscopy, but I'm still afraid. What to do in this relationship when I don't have contact with a doctor?