Yep, I suffer/battle with gut palsy on a daily basis still - believe me, it's very real!! It's definitely one of my hardest hit, and longest affected areas.
I've heard of pharma meds creating a situation where the taste sensations are way off, but the people I was talking to weren't being treated for these infections. It could still be the meds, but I don't recall many people reporting that on here, but maybe others will?
I have looked online and do see that some are reporting it during herxing.
www.lemonandlyme.com/Articles/Expect/Herx.php Here, a member reported it while using clindamyacin, although you didn't way you were using it:
www.healingwell.com/community/default.aspx?f=30&m=1534422 So a number of reasons why it could be happening from what I can see.