Take a few deep breaths...your emotions are all over the place...NOT a great time to make any kind of important decisions.
Sure your doc is taking you of these meds, but if his diagnosis is correct, there are other meds that are needed to help with the mood swings, the impulsiveness, the "rawness"...I once heard it described like this: the person with BPD has emotional skin that 90% open, like a major burn, and thus any uspet,threat, criticism, causes MUCH more pain than it would for some others.
Have fun tonight on your 7-ups (though some soda and a twist of lemon and you'd have my drink)...dance your tush off...let some of this emotion OUT!!!