hi, so my boyfriend is pretty well endowed (about 6 1/2-7 inches). personally i dont know the length of my vagina but i'm pretty convinced i won't be able to take him all in due to my small stature, and i know that vaginas tend to expand when aroused but i'm afraid we'll just end up with uncomfortable penetrative sex. we haven't gone that far yet seeing as it was hard enough and slightly painful on my end for him to finger me with just one finger, and i wasn't even tense at that point. i might want to add that i don't usually masturbate past the labia, i.e externally, so i already have a pretty narrow vagina to begin with. i've started to try gently stretching out my hymen with my fingers every once in a while, but is there anything else i can do? or am i just destined for uncomfortable sex?