I've been on SF for about a month now, and I'm finding it is making me really constipated. I'm struggling to 'go' every day and feeling really uncomfortable. My surgeon (I'm down to have a gastric bypass) has given me Xenical which are known to cause dioreah but they don't have any effect. I feel like I'm trying to give birth every time I try to 'go'. Anyone got any tips or had the same problem?