When can I lift weights, run, bike, swim?

I had moh's surgery on a very small spot on my scalp. They only had to do one round. I was used to exercising daily. When can go back to exercising? I can scale the intensity back, but I don't think I can wait too long. I would wear a swim cap (Can wear 2 if needed). I won't do yoga since there is too much inversions, but how can this small surgery be a problem for everything else?