I just went to a GYN, and they never told me if I had a tilted u or not. They most they told me is I have a 'pristine pelvis', which just means healthy, though they did say that perhaps in some instances it wasn't tilting -enough-.
As for the abnormal periods thing: I get mine on schedule, though they are irregular, 1-2 days bleeding, 1 day none, and 1 last day bleeding. I get cramps and nausea that are independant from the IBS cramping, and it generally feels like I am being punched in the stomach. I have however noticed increased sensitivity during my periods o_0
It'd be quite odd if it were all somehow tied together, and nobody had ever thought of it.
-------------------- Falling from heaven isn't nearly as painful as surviving the fall.