SVT problem

I am on the waiting list for ablation for my SVT. Does anybody get pressure in the chest mostly all the time? I take Bisoprolol 1.25 morning and evening,it lowers my blood pressure too much,I do not have hypertension. When I take my blood pressure in the mornings it shows that I have irregular heartbeat and by the afternoon it seems to settle. I was taken to hospital Christmas Day with a heart rate of 174, every time I have an attack I notice my chest pressure and it magically goes down when it goes back to normal. My heart rate is around 62 mainly. Blood pressure this morning 116 over 61. Thanks in advance