I had diarrhea 3 months back twice, 3,7 days and I took norflox Tz without probiotics from a doctor, since then I'm forming gas very frequently. From last 7 days without eating outside food my stool is coming out black and after passing stool my stomach makes "gad-gad" kind of sound. From last 5 days I'm taking Lactobacillus + pantocid twice +Isabgol from a doctor. My condition is not getting better. Is it coz of antibiotic overuse or my infection is still not cured completely? Shall I take some other antibiotic for this? What can I do? I'm suffering from depression and those meds are also not working coz of this. Help in detail