I Have Been Told By ER That I Needed Surgery

I have been told by ER that I needed surgery for an ovarian cyst this has been over five years now I have no pain I went to see a doctor I was told to show proof of the diagnose I couldn't so alot of time has passed now the dentist has told me my blood pressure was so high that I have to see a doctor I have been taking blood pressure for about a month and it's steady 170/110 or higher on a regular what do you think the last check up or blood reading it was perfect I have been going to the dentist ongoing the last was within the last three months it was normal