I agree that communication helps. It's sometimes awkward. Why the increase in discharge? You don't have any issues going on, do you? Hormones in balance and all that? We do go through changes down there and with discharge. One of the biggest factors is our hormonal balance. Are you stressed these days? But glad you have a great sex life. And hey, he may just be thinking about anal because there is enough lubrication to handle it right now. I don't know. Do you go for an annual pelvic exam with a gynecologist?
Maybe you just ask him - is he still feeling things OK? It might be fine, could be he’s just interested in trying smthg new to kind of ‘spice things up’. Could be he’ll discover he doesn’t actually like it that much anyway. But please make sure you are 100% OK with this - it may not be too comfortable for you, especially at first. You need to be fully relaxed & use a thicker lube that’s better suited to anal sex. Also ask him to be gentle, not force things, and if you’re in pain, ask him to slow down or even stop. If he loves you, he’ll respect your wishes. Remember, that opening was not designed for that activity, so it’s going to require a little more care & patience...