Ive had relentless lightheaded / dizziness for 3 ish weeks. worst in the mornings. groggy. off my game. appointment for dr is upcoming. occasional headache. will do blood work and all that. chances its something sinister/ very serious? bp normal?

In fairness, it's difficult for any doctor to give a definite answer without getting more details and performing a more thorough work up (including lab work). A few things that come to mind include possible medications, an infection, or anemia (often from gradual blood loss). These are only a few more common possibilities. They may want to order a head CT or MRI as well. Good luck to you!

There are many possibilities for what you are describing. It could be related to a middle ear abnormality, it could be a blood pressure or pulse abnormality, etc. It could be something very benign and easily treated or something more serious. The only way to know is to see a doctor and get examined with diagnostic tests. Keep your appointment. Good luck!

It is not feasible to provide an opinion without additional history, physical examination may be some tests. It would be prudent to see your doctor to see if you may be depressed. Depression is treatable. Counter-intuitive as it may seem, exercise may help. Start with low intensity exercise such as walking and gradually increase the intensity as tolerated. Drink more water. Wish you good health!