Was Taking Losartan 100 Mg Was Changed To 50 Mg

was taking losartan 100 mg was changed to 50 mg lasartan plus 100 mg of metoprolol per day. ihad stent placed due to blockage of one artery across heart. my problem now: when walking briskly was fine until procedure and change of meds. now have issue with lungs not feeling like it is keeping up when walking faster. have appt with cardiologist on friday next. should i request removal of metoprolol. feel it is affecting my life style do NOT have the stamina prior to heart cath. am 66 yr old female with hypertension have lots 25 in three months want to get more weight off but, cant walk very fast now. sorry for all the typos