High blood pressure. Too much stressed.

I have checked my bp 7 times till now 1.21 may - 150/90 (was having anxiety attack) 2.10 june - 122/76 ( having no anxiety) 3.14 june - 128/72 (doctor visit) 4.20 june - 162/90 (although was not too much anxious but for some reason rushed to check my bp, also had high pulse) 5.24 june - 130/83 ( was at home a little anxious though) 6.25 june - 154/92( checked at local pharmacy although i was a little anxious) 7.25 june - 144/87(after 1 min of above reading at same pharmacy) The thing is that the 4,5,6,7 reading all came when i was on prescription of petril beta 20 an medicine which reduces anxiety plus blood pressure, as it contains propanolol, still i was having this much bp, is there something i need to look for, should i consult a doctor for thisorits just anxiety, because i have an imp exam comin next month. Also should i consult a psychiatric to increase my dose of medicine, if my bp is due to anxiety, that means thaey are not working fine. Please guide me, i am too much stressed.