I had a burning sensation after passing urine and passed only a very little amount of urine. The doctor said I might have some urine infection and gave me fosfomycin sachet powder to take it once. Didn't check the urine test or culture.  I took this on Tuesday and I am passing loose stools after that. It's not like watery diarrhea. It's like soft mushy stools which stick on the toilet bowl. Not solid shape.  I passed those loose stools three times Wednesday and Thursday. It also smells like a foul smell. It's semi liquid soft mushy stools. Is it normal to have these types of stools after the fosfomycin sachet?  I also got anus fissures the next day of taking this medicine. Got the medicine for anal fissure.. Is it expected to have loose stools for a long time after fosfomycin?  I am worried if taking this fosfomycin medicine without confirming the UTI without the urine test causes any harm?  When will this loose stools stop after this medicine?  Also, i have burning in the anus.