Congratulations on your gains! Your size is quite good, especially your girth. Future gains are just gravy now.
What strikes me as odd in your story is that your girlfriend went from coming during intercourse to not. Why do you think that is? If your dick were really too small for her, she never would have come in the first place. My experience with women and orgasms is that it’s all about emotions. Perhaps the relationship wasn’t working for her any longer, and her orgasms drying up was just her body’s way of telling you.
Regardless, even if your dick size was the issue, it no longer is. You’ve really packed on some nice size.
Welcome to the forum. Like the guys said above, don’t let the LOT stuff drive you crazy. The basic rule is to stretch generally upwardly to grow your shaft and generally downwardly to grow your ligs.
Enter your measurements in the PE Database.