Hi there. Welcome to the forum. So, this is something to ponder, right? You have no symptoms regarding your vaginal discharge? It's not a bit thicker, consistency hasn't changed, it has no odor at all, no itching or irritation? So, I have two thoughts to consider. First, his semen is involved here, right? If you don't use condoms, the ph of your vagina can change and that 'might' give you a metallic flavor. That's a long shot. The second is that ya, it's him. How's his oral hygiene?
To be safe, you could schedule a pelvic where they swab your vagina. They can look to see what is going on. I think our ph of our vagina also changes with our hormones so also wonder if you have had any hormonal changes. Is this also worse after your period, for example.
Thank you for the reply! Correct - I have no other symptoms. No difference in vaginal discharge, no odor, no itching - nothing. And he says I don't taste any different, which is why the after taste is so baffling to me. I just had my annual pap smear a week ago and my doctor said everything looked great. I think if something was off, it would have been noted at that appointment? which I mentioned to my husband. He thinks my hormones are off, but those have been tested a few months ago and all were "normal."
I suggested maybe it was something in HIS mouth that was interacting with me.. he does have bad breath often, which is usually caused by bacteria, but he insists it's me. So I'm just trying to make sure there isn't some knowledge out there I'm missing!
I am inclined to agree with you. I would guess too that this is something to do with his own mouth. It doesn't sound like there is any reason on your side. And since he also has bad breath on occasion or frequently, bingo. Maybe suggest a trip to the dentist or ask him to drink some water before sex (dry mouth makes things worse). By the way, is he complaining or just telling you?