She said I was the first...

You probably took the time and care to avoid her cervix like you stated and the others did not. Some woman have a sensitive cervix. Another good possibility is you actual performed foreplay which got her good and wet - big difference!

After reading and thinking about it, that pretty much sums it up. I reached her (very pronounced) cervix easily and eased underneath it. I’m not sure how many guys, outside this forum anyway, is cognizant enough to know where to go hard and when not to., when it’s a “good” pain and when it’s a “bad” pain.