Could MacroBid Be Causing My Increased Blood Pressure, And Why Do I Still Have WBCs In My Urine After Two Rounds Of Antibiotics?

I was just on a second bout of MacroBid for a UTI and have noticed an increase in my BP - which I am on Benicar 20 mg BID for. Could this increase be due to the antibiotic? Also, after the two bouts of ABX I am still showing a small amount of WBC s in my urine.