Hi I Keep Getting Some Weird Head Rushes As If

Hi I keep getting some weird head rushes as if my blood is going straight to the top of my head. It happens at least 2 to 3 times a day however it seems to put a blur on my eyes for about 5 to 10 mins. This has been happening for a year now. I used to think it might be something with my anxcity but I'm not so sure now. Coz it happens anywhere anytime even if I'm walking sitting having a chat it just comes. Should I see a doctor or is this normal.