Am on birth control. Stopped taking it 12 days into the pack to get period early. I got it now 1 week into my pack I'm havin brown spotting. Normal?

Probably. The pill controls your cycle artificially and generally predictably. Any alteration in the regimen will usually result in unscheduled bleeding. Fortunately this is usually temporary and self-resolving. Be careful though- changing the regimen will reduce the pills effectiveness in preventing pregnancy.