@mala1921 I too took clindamycin for a tooth infection back in August, 2018. Three weeks later I ended up in the hospital for 8 days. Agony! They gave me vancomycin but I relapsed 4 times over the next 7 months. Lost 14 pounds and weighed 86 pounds. Finally, I had an fmt (fecal microbiome transplant) in March, 2019. Since then, I have been doing ok. However, I still can't gain any weight back! I live in terror of it coming back or if I get sick and need any antibiotics. A lot of antibiotics can start it back up. I take probiotics every day, specifically, Visbiome and saccharomyces boulardii. If you have any questions, let me know. Good luck to you! Hope you feel better soon.