Sarah, how are you doing? I know that moving to a new way of eating is scary, but Phase 2 is much healthier for you. By staying in Phase 1 too long, you can deprive yourself of the fiber and nutrients you really need. Try moving on to Phase 2 slowly, with only one new thing a day for the whole week...like a piece of fruit each day and no other changes. Then try adding something else, like a bowl of oatmeal. Slowly, and do it for a week at a time so you can really give your body a chance to adjust.
As to feeling fat and bloated, yes...I think we all can feel that way from time to time. Metamucil capsules can help, as does drinking your water, eating flaxseeds (ground), and exercising (moves your bowels). Other factors weigh in too, like when it's your TOM
or if you just "feel" fat that day, regardless of how your body actually is.
Sarah, you may feel like you have a ton to lose, but it's not really that much. I wouldn't stay on Phase 1 much longer...you can always go back if you feel that somethings not working right, okay?
Don't worry, you can do this!