My advice: call your psychiatrist. She can help you figure out what's going on. Also, it could be the increase in Lamictal. I know for a good while that a large dose made me manic. She may be able to adjust your meds so you can come down off the high a little easier and not just crash right into depression again.

Besides that... just hang in there. As my grandmother always said (in her Mississippi accent) "This too shall pass."