Could Blood In Stools Be Due To Daflon And Ornof?

Hello My mother age 58 is suffering from haeriods (Grade IV). Now doctor has prescribed 1) Daflon (500 MG BD), 2) Ornof (BD) 3) Zincovit and Chymoral - BR (BD). She has been prescribed for operation in 1 week from now However, now far past 2 days there is too much blood passing in her stools. Could it be some medicine not suiting her Please suggest Best Regards Tarun