Sorry just realized there were multiple versions of this post, and that it happened in December. Disregard the timing information above. I'd test for everything now.
Well the first thing you should do is get a basic STD screen.
It's too early to test for HIV, Hep B&C or HSV but you could test for Gonorrhea and Chlamydia immediately. You could also test for Trichomonas, it's a common infection. It's a little early to test for syphilis. If your "dark spots" do turn in to sores then you could have those tested for HSV, preferably by using PCR instead of culture because if the higher reliability.
You should also refrain from unprotected sex with your husband until you know your status.
It sounds like you might have a rash, I don't know what from but a rash can be associated with syphilis or HIV. I'm not saying that's what you have, but those are two STDs with a rash as a possible symptom. With syphilis it's typically on your hands/feet and HIV it's typically on the trunk of your body.
Itching eyes is not a STD symptom.
In the end, you are going to have to be tested. So do so as soon as you can.