4 days post op and having pain

I had Lab band surgery on monday 9/11!!!! But now I'm having some pains. I think I can feel my band. It's like a knot. The only comfy position is slightly bent over. Is it just swelling or somthing else? I just noticed this Wed night afert most of the other pain went away and I have no intrest in food. I went for my band study on Wed. and was told everyting looked good. I have a wound check next Wed. so should I just wait till then or call my Doc tonight?

Call you doc ASAP. Do not pass go, do not collect $200.... I'm serious, this is your health. Jane