My wife is suffering from blood in stools. First time when she noticed it in january 2019 but the problem increased with loose motions in april 2019.in colonoscopy ulcers were found but biopsy report showed infective colitis. So she was given antibiotics as well as mesacol od and mesacol enema but problem remained same so stopped medication but. After some days she did not have any symptoms but now again she is having bleeding stools with frequent motions. What should be done?