I Was On Clindamycin 399 Mg For Problems From Two

I was on clindamycin 399 mg for problems from two root extractions, had been on medicine for 6 days. Now 2 dys later ready to use the bathroom, found my sanitary pad full of bowl and sat on the toilet over one hour with bowl constantly just running out and I could hardly feel it most of the time but filling the toilet bowl three times with the bowel very flat but soft, no need for me to try to go, it just kept coming.