The acidophilus is a probiotic and may cause some gas/bloating initially, but I think this should go away with use. Colfac does have lactose in it, although a very tiny amount, but I'm not sure if that would affect you?
The loperamide is the same as Immodium. I take Immodium AD which has no lactose and has an extra ingredient that helps relieve gas and bloating. Some people also take Beano for gas and bloating.
The foods you're eating look great. Berries tend to be a bit hard to handle for some. The soy milk too might take a bit to get used to. Keep up the diet for a while and see if you notice improvement. A few days is not much time to let your system calm down.
For a comparison, I started off for a few days with only SF foods, then incorporated some veggies and meat (usually one new food per day), and finally soy products (after a few weeks). It does take a while for your stomach to get used to new foods.
I'm interested in the dairy free chocolate you've tried. Is it good? I'm addicted to chocolate and have found it hard to give up..