Yeah that's exactly what happens to me sometimes. My body just can't make up its mind lol I'm on prednisone, which always makes me constipated. So I take miralax and colace, but it doesn't make me quite regular. Some days don't go at all, other days I go a LOT lol. Never diarrhea luckily, just lots quantity wise lol. And then sometimes it's just mucus. But definitely better than constant diarrhea!