Can a guy actually “stretch” you?

I know the vagina is elastic and returns to back to its size but can a guy stretch it more than it’s used to? My current bf is by far the biggest in terms of width and length. Lately, after a day of sex, my vagina starts itching & feels sore. We always use protection & I haven’t gave him oral so I doubt it’s an infection. There’s no pain or nothing, just that. He also tends to go a bit rough