I agree with dakotagirl, that you probably have a fungal/yeast overgrowth, especially since you took antibiotics and steroids. Along with the probiotics, which I also highly recommend, you will need to starve the fungus/yeast. Experiment, and stop eating processed sugar, yeast and all grains(including corn) for awhile, since these are what feeds the fungus. Aim for lower carb foods. If you notice an improvement over 2 weeks, then you will have diagnosed your problem :) I noticed an improvement within days. Good luck........