Had tiny red blood vessels appear on my shaft after ejaculation. my glans are red and inflamed. veins are causing my skin to turn red. im very scared?

What you are: descibing is not actually concerning as penis during erection is engorged with blood causing distention of all blood vessels. This includes the superficial ones, and a change in color of the glans penis temporarily. Is this a change from prior erections? Is there pain associated? After sexual activity does the penis resume it's normal appearance to you? Not enough information has been given.