Talk to Gastroenterologist on Irritation Bowl Syndrome

Dear Doctors, I am patient of IBS. D and doctor has given 1 month medication which i used as doctors prescription. Now after 1 month i m feeling well and i stopped medicine due to shortage of money i cant afford fees and medicines. Here were my medications. Rifaxa 14days completed course Librax 3tds Zantac 1tab at night before meal Selanz SR 30 cap before breakfast Pentoxol M 1 tab daily I left all medicines without doctors suggestion bcoz i hve no fees to afford my self kindly guide me should i continue or left as i skip yesterday dose. if continues how much time to continue bcoz Doctor told me to use 1 month but i dnt visit again i know its important but my pocket doesn't allow me. Thanks to all kind heart doctors.