Hi welcome to HCMForum. Dont worry some antibiotics for some people have gastric irritation property.
When the first stage crosses passes to intestinal irritation causing dysentry
with mucous and blood it
may be your case. i advise you to consult your doctor for follow up. He will change your antibiotic and
give some non irretant antibiotic as the UTI should be controlled completely.
Besides i advise you some diet recomendations as avoid taking more of spices chillies junk foods
and oily foods to prevent gastric and intestinal irri tation. wishing for a quick recovery. thanks for