I, personally, would not say birth control caused my phobia. I didn't start taking it until I was sixteen and I was nine when my phobia started.

I think you're just reacting oddly to your birth control. If I remember correctly, it can cause increased/decreased appetite, and I know for a fact that in some people it causes nausea for the first few weeks.

I agree with fivefeetshort - did you mention to your doctor that you didn't begin feeling this way until you started the pill? Maybe an adjustment or a new brand would be a good solution! I would be shocked if you're not just experiencing some pretty lame side-effects from the birth control. I'd call and see what your doc thinks. =)