I am going to have to be graphic here so please forgive me.I tend to get severe runs about 5 times a day - and it floats, and smells horrible, like sulphur. Some days it'll be about 3 times and may be kind of softly formed, still smells bad. Yes - my gas has gotten a lot worse. I'm CONSTANTLY hungry and have changed from what used to be a really healthy diet to eating high fat foods to see if I could get my weight up - and nothing happens. Now, I don't know if this is because my health has been bad so I'm burning more calories, and if it is because I've been taking Zithromax for the past few months - I went off of it to see if that was causing the problems but I kept having the runs. I am having more joint problems and some fatigue as well. I also get extremely uncomfortable after eating - my stomach gets really bloated to the point I look pregnant, and my stomach feels really hard. I don't notice an "oil slick" in the toilet though.