I've been feeling dizzy while sitting and walking for months. can this be a ear infection? stress? or optical? blood pressure is controlled

There are a # of: Possible reasons for dizziness. Your conditions indicate "fatigue, hopeless ; poor concentration" ; you mentioned stress? Have you felt depressed? At this point i would see your regular physician -as there many plausible causes - it will just need to be worked up. Take care.

Yes: You should ask this question of the doctor who knows you best. Yes, could be all of those things.

Dizzy vs. Vertigo: There is a difference between these two terms. Ear infection leading to labyrinthitis is one means of developing vertigo, but there are other potential problems. You should be seen by a neurologist and undergo a detailed evaluation if you actually have a sense of spinning, or the ground coming up to meet you. Good luck.