I was having sex with my gf the other day, I had already taken viagra cos I had thought it might be a problem getting fully hard. When we started I was hard as a rock, but about a minute into missionary I started going soft. Flipped her over, that seemed to help and I was able to fuck her in prone bone till I finished.

Why the fuck did I go soft when I was literally inside a girl? I’ve got blood tests done recently, my test, estrogen, and prolactin are fine. Test is a little lower than I would like (568ng/dl) but it’s not low enough to explain me going soft in the middle of sex. I don’t watch porn and I don’t fap.

Anyone experienced anything similar and how did they solve it? Is it worth using anti anxiety drugs like Xanax or phenibut till it goes away?