Hello and hope you are doing well.
A high blood pressure and low pulse rate can sometimes happen due to certain medications like beta blockers. It could also be due to sick sinus syndrome or atrial fibbrillation. Please consult your doctor, who may do an EKG to determine the cause.
Hope this helped and do keep us posted.
I was told by my doctor only under 40 is not normal. I would not worry,if sometimes go down to 50 but would tell your doctor when you see him.