What Causes Swelling In Scrotum After Varicocele Surgery?

Varicocile surgery post operative care.

I had bilateral varicocile surgery 10 days ago. My scrotum is about 1.5 times the original size. But it doesn't look like a swelling. Just a bit oversized with all the usual curls and folds. The doctor said it will take 2 to 4 weeks to completely become normal size. I was not wearing any underwear for the first week as I was on rest. Now wearing jockey type for support. I would like to know anyone experienced this. Is it normal. Should I worry ?