I believe he is even though they don't really make any mention of it. In the novel, he spends about a month recovering and even mentions having to make sure everything still works down there. I think in the film pretty much the first 75% of it take place in the span of roughly 7-10 days and the last quarter takes place about 1 month after the rest of it.
Yeah in the book it's a lot longer of a recovery and that's what I say whenever I watch it. I mean he must have a strong penis in order for it to still be working.. I like the torture scene though. It's kind of kinky in a way because she has dominance over James Bond when usually it's the other way around for James seemingly how he is usually the dominant one.