it sounds like the beginnings of a manic episode. i would recommend you get this under control before it gets much worse. they say the first 3 days are the fun highs, but after that...
i just upped my lamictal as well. started having vivid nightmares, which woke me up in the middle of the night. than i had trouble falling asleep because i was taking my meds too late.
call your doc right away to see if you should scale back on the meds for the time being. they may have other recommendations. take a nice long bath, drink a warm cup of decaffeinated tea, listen to soothing music. overall, find calming, relaxing activities. hopefully someone is home with you to help talk you down from your high.