Hello I'm 23 year old female. I'm experiencing delay menstrual cycle from last 2-3 years. I sometimes feel burning sensation on the top of my head. And Dizziness all the time. My head spins. Sometimes my Blood pressure fluctuates too. I have Stomach problem

See a doctor. You need to see a doctor so they can list all your problems and prioritize it based on the severity of the problem and find out if there is any connection between the problems or try are simply a separate problems happen to hit you at once. The bottom line see a doctor .