Medial bilateral thigh lift 6 days post op. How soon can I go walking and how soon for the stairs in my house? (photo)

I get up and walk many times bathroom, shower, walk from bed to sofa in room but scared to go downstairs. Because I went down once and came back up and my legs got so tight and swole. I thought they would pop open. It did go back down. However when ever I walk to much the top part of my thigh tenses up. Pictures are from today Jan 29th, 2017 6days post op does this look normal? Is the yellow tint to my incision normal? Is it normal to have this yellow oranges type drainage? No sign of infection.