My readings have been dancing around 155/100 for about a year (I am a 55 yr old female). I keep switching medications, from Altace, to a beta blocker, to a calcium blocker (that made me terribly constipated)and now back to a beta blocker. Initially this medication seemed to be helping. The readings went to 140/88. But now I see the readings going up again, plus my bpm has dropped to 56 resting. Is this low pulse a concern? I do feel a little light-headed, but it could be anxiety. My doctor keeps changing meds and telling me to come back in 3 months for a check. Should I be seen more often?