Cut myself

I was recently diagnosed with Bipolar 1. Got prescribed with Lamotrigine 25mg for 1st 2 weeks will eventually up it to 50 on week 3, and 100 on week 5. I am taking it for a week now. I suddenly still have suicidal thoughts, and i cut myself for the first time.

Is this a side effect? I dont know what to do. I’m alone and don’t want to talk to anyone.