The thing is lamictal caters to the depressive side of the illness. I would go ahead and still take it to make sure you don't go into a depression. You could also request to stay off meds for a bit and monitor your moods using one of many mood tracking aps or websites. The only thing is, being off meds, if you do happen to go into a depressive or hypo/manic state, the meds used to treat it generally take weeks to work, so you end up in a possibly bad situation.