Around November 19th I started taking a probiotic called Primadophalis. Within a couple days I was feeling so sick that I had to miss an entire week of classes. I stopped taking the probiotic around the middle of last week and now I am finally feeling better after a variety of strange symptoms ranging from odd aches and pains, to coldness, to chest pains and a lack of appetite. My theory is that my immune system rejected the bacteria and gave me a small stomach flu. My brother thinks that the bacteria could have impacted the wrong part of my stomach, making me ill.