Talk to General Physician on Blood Pressure

Hey, i'm 24 years old. From last fews days My blood pressure fluctuates throughout the day. It just started after my sister death 3 weeks ago. i am very depressed nowadays. I have done with ECG and Echo but that was normal. When i visit to the clinic of doctor the Bp becomes 130/80 but sometimes when i check home it become 140/80 150/80 and once it was 140/120 and it was on digital meter it changes every minute. I have anxiety of Blood pressure. I checked every hour my blood pressure most of the times it is 130/80 but in the evening its 140/80 but it was 140/120 once. what should i do and which doctor i should visit. Blood goes high because i feel anxious or it is something else. Please Advise.