I have researched it and found it is common, but I am 71 and have never had anything like it. My friends here in the apartment back step a bit when they look at me until I explain I am not an alien- I just have broken blood vessels in my eye. And the general comment is that it is a shame it is not Halloween! It is supposed to clear up in about 2 weeks. Unfortunately, there is not a pill to fix it.
Since I do not think I hit my eye, I did some research. It can be caused by some medications that I take and is aggravated by my diabetes. And unfortunately, you must wait it out. I cannot get rid of the diabetes, and I must take my meds to live. So, as much as I hate not being able to do something about it, I must wait.
If it does not go away, as promised by the internet, in 2 weeks, I will seek medical attention. Until then I will sit until that 15th day starts before acting.