Mother's BP is significantly lower on my wrist meter than with the nurse's upper arm cuff. Since my meter corresponds well with a 24 hour monitor I used on me, we suspect calcification of the arteries leading to a significant pressure drop down the arm.
When she was last in hospital her BP was low so they stopped her candesartan and kept her on felodipine and furosemide. On that combination her BP kept shooting up high and she was also getting severe gout attacks.
The GP returned her to the lowest dose of candesartan and stopped the felodipine, and changed the lasix to bumetanide. This has stopped the BP spikes and (so far) the gout. So yes, sometimes meds *can* make BP worse when they are supposed to be doing the opposite.
Best bet would be to go back to your GP. Usual "starter" drugs are ACE inhibitors, or if they give side effects, usually an annoying cough, ARBs. Both have kidney protective benefits which calcium channel blockers lack.