Danielle, with the limited information it is hard to tell. It could be an interaction with your medications. Most antidepressants have potential food and/or drug interactions. The one in this recipe that I'd guess could pose a problem might be the pineapple, however I do not know for certain. Let us know what your Dr. says.
Have you tried any NutriBlasts since this one and did you get the same reaction?
You also say it is a MAJOR change in your diet so this could just be a "shock" to your body. Keep us posted!