I am a young adult female and am worried I may be bipolar. My mood swings aren't extreme in that I go from highs to lows throughout the day, but they last longer. I can be 'happy' for 2-3 weeks before slipping back into depression. My sleep schedule is a mess, I'm irritable all the time, the smallest things can make me extremely frustrated or angry. When I am okay/happy, or think I'm doing okay, I feel like I can take on a lot more, feel more inspired and creative, but am still irritable.

I know that bipolar has the extreme mood swings, but I read somewhere that they can be more subtle. I know I can't get a diagnosis on the internet, but I was just wondering if anybody else is/was similar and received a bipolar diagnosis? If so, how did you go about it and what happened afterward?