I Am 61 With A History Of High Blood Pressure

I am 61 with a history of high blood pressure which has been under control for years with verapamil and atenolol. Because of a warning which indicates that the 2 meds are dangerous together, my doctor recently reduced the atenolol from 50 mg to 25 mg. I was fine at first so we reduced more but I do not feel well and my bp is 107/57 and my heart rate is 40