Suggest Remedy For Dizzy Spell,throbbing Pain In Head And Hearing Heart Beat In Ears

For the past two and a half weeks i have been having the following things: I work behind a computer, I am morbidly overweight, I am trying to stop smoking (taking Welbutrin): I will get up from the computer and will get a throbbing sharp pain in my right side of my head, I can hear my heart beat in my ear and my legs go numb almot to the point I pass out. Most of the times I have to sit back down before I fall down. There have been a couple times here recently I have no issue getting out of the chair walk about ten steps and then the headache hits and my legs go numb. I went to my primary care doctor and asked if the welburtin was doing that, I went from the main brand to the generic brand. He stated that probably isn't the cause. I have given blood about three weeks ago (ruled that out), considering I have many strikes against me i haven't figured out the cause. Strikes = overweight, smoking, sleep apnea, prone to diabetes. There have been a couple instances were my head is throbbing so bad it brings tears. I have had to leave work early just to go downstairs and take a nap to my car. I have been checking my blood pressure and its been fine. I have even checked it when I was having the dizzy spell with headache and it was still normal.