Yes, I was about the same size as you when I was “in circulation”. I have been married for a long time now, but prior to that I had a couple of lovers who I had to be careful with as I would cause them discomfort by banging their cervix in some positions, usually doggy style, cowgirl, or “jackhammer” (missionary with the gal’s legs up over your shoulders. There were also a couple who complained of a lot of jaw ache when giving me head, even at my girth, which was a lot less than a lot of guys here.
I never had any women that I was unable to have sex with vaginally, but there was one or two who told me they were a little sore afterwards and were glad I wasn’t any bigger.
With my wife, I used to bottom out regularly, which was generally uncomfortable for her, and I was a snug fit in her, if not tight. After two pregnancies and vaginal deliveries, things were different, not exactly loose, but certainly less snug, and I never touched bottom. Now that I have been doing PE things are getting back to where they were in terms of “snugness”, and I am starting to touch bottom again. Interestingly, this is no longer uncomfortable for her.
Our experience just makes me wonder why so many guys who are significantly larger say they have no difficulty finding women who can accommodate them with no difficulty. I would think that guys who are up around 8 inches in length and 6 inches in girth, or especially those who are larger, would start to run into serious trouble with at least with a significant percentage of girls.