I'm getting a weird feeling a lot lately and not sure if it is auras. it is very fast and brief. it flashes usually an image i know nothing about. comes with a very strong feeling in my chest of maybe fear or guilt. afterwards i can't recall it?

It is not feasible to provide a meaningful opinion without taking additional history, physical examination and may be some tests. It would be prudent to see your doctor and discuss if you may be depressed. 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!

In ad situation like this it is important to see a Doctor, the sooner the better, for a physical exam to know if you have an illness or if this is a drug reaction. If not please see a Psychiatrist for an evaluation and medication to stop the visual episodes. Then follow up with psychotherapy from a Clinical Psychhologist.