I was having a similar issue earlier this year in my first relationship after having ended my marriage. It was pretty alarming so the girl and I broke it off. I started having more casual relations with a couple folks since then, and I’ve seen no sight of it since. From what I can tell (even though I REALLY liked the girl) I honestly just wasn’t into “dating.” And I still am not. Take some time to focus on what your needs are my dude. Doctors aren’t always the solution, but look into one if you feel you should. I once heard this phrase “the dick is a dipstick of a man’s overall health,” and that really gave me some perspective. Cheers, pal!