After I ejaculate, I get extremely red eyes. Is that something to worry about?

Wow, I hope you are remembering to breath.
Here is a test. Time how long it takes you to ejaculate, then in a day or two go through the motions of masturbating but with nothing in your hand, do this for the same amount of time that it took you to ejaculate before and then check your eyes. If they are red this will tell you that it is exertion that you are putting yourself through and not the ejaculating that is causing your eyes to get red.