I had spot in my eye wht can i do?

Go to your doctor: This is probably a posterior vitreous detachment. The gel inside your eyes, vitreous, has partially liquefied & is pulling away from the retina which lines the back of your eye & is a normal with aging. This causes floaters. The only concern is if it begins to pull on the retina & tears it. Retinal tears can lead to retinal detachment & blindness. Go to your doctor to be sure.