I just read acne.org board. About some got clear up after improved their timing of drinking. This is something you can try.
I believe I am giving my colon time to re-adjust to its normal position after a year of drinking ALOT of water. now to me, freakly alot. So Alot enough that I even burped liquidly everytime after meal. Now almost nothing, sometimes little bit. I can see that my body is changing for sure. from aquatic colon to normal. :)