HI Sheri, It sounds like you might not be eating enough. I've read up on this topic and from what I have read most will state that you should not drop your calorie intake below 1,200 calories per day. You could purchase a small cheap calorie counter book for items that don't list the calories, fat, etc... One of the things I have also read is that if you multiply your weight by the number 12... that is the number of calories you need to sustain your current weight, you won't gain and won't lose. Then you could either subtract a few hundred from that number or best yet remain active to lose a few pounds per week. You really don't seem like you need to lost weight, but I know what you mean about being tone. Do you find that excercise helps with your IBS symtoms? I need to get active! CAhty