We had something VERY similar happen with DD1 when she was 2. My dad convinced me that she was being tormented. I honestly don't know, and we are Christian, and made some changes and prayed a lot. I was a wreck. But we also found that, like another mama who posted, that this all got a lot better when we took her to the bathroom. We started taking her and sitting her on the toilet to pee as soon as she would start stirring (1-2 hours after she went to sleep, usually). This helped SO MUCH. She gradually had fewer problems and now sleeps through the night with no problem (she's 5, but has been doing great for the last year and a half or so). Feel free to PM me if you want!
Heather- mama to Evelyn 2007, Rachel 2009, and baby boy expected January 2016