I was out for 5 weeks. The hardest part of my recovery was letting my rectum heal and gaining weight and muscle, since my abdominal incisions were laproscopic and tiny. At the time I had my surgery I was a dancer at Disney World, so I really needed to be 100% to return. If I had had a desk job I would have gone back sooner.
I was 28 when I had my surgery. You are young too so that will help you heal faster.