hypomania turning into mania

was wondering bout bipolar 1... if u hav a manic/mixed episode, is it normally preceded by hypomania? if ur working intently on an idea for bout a month and then it escalates beyond logic for bout 2 weeks i mean.. or is that more suited for schizoaffective diagnosis?

im also worried cuz i didnt feel right for a few weeks afterward, but i was also freaking out about what had gone wrong with me enough for the stress to cause its own problems...

-matt