55 year old female, I normally take Toprol for high BP. I recently went to a low sodium diet. I ran out of BP meds and picked them up today. Not feeling well, headachy, lightheaded, I took my BP and first reading was 128/43. I get chest pains and have seen cardiologist for a catheter this past September. Small blockage on descending artery, but he promised nothing that would give me a coronary. I ve checked BP a few more times and it s consistently staying around 120/56, 126/58 Should I be concerned?