I had a similar issue. Turns out it wasn't a yeast infection (thank god), just overly sensitive skin. I learned that it is pretty common too and that made me feel a lot better. I bought myself a penis health creme and used it every day. It really worked for me. Check it out.
Same thing happened to me, it is most likely a yeast infection, that you are giving back and forth due to the intercourse with your partner. Believe it or not, Monistat ( a medication for women ) that you can purchase over the counter helped mine clear up, within a week and stayed healthy due to both of us using Monistat at the same time. Took me months to figure out with no health insurance. Maybe this will help someone. All the best.
ive been have the same exact problem and have developed a rash on the under side of my penis and scrotum where the penis lies.
Hey I have basically the same thing, but my GF isnt on The Ring. Did you ever figure out what this was?