It sounds as though your surgery was extensive. You can expect some swelling, warmth and discomfort around the surgical site. Have you been applying ice packs to it. This should be done several times a day to help reduce both swelling and pain. Also elevate your legs and try to rest to see if this helps.
You mention increased pain around the incision site. If this pain and swelling increases anymore, if you start to get a high fever (temp), or if your wound starts to drain, I'd see you doctor immediately.
I'm with Sue on this one. Even if it now seems a little better, see the GP. Infection is always a risk and bacteria are clever little ******s! They can sit around twiddling their thumbs and quietly multiplying, and suddenly millions of them are running around your system! Last summer my blood tests came back showing that I had an infection - handy test, since it tells you to worry but not WHERE too worry about!!!! The consultant was worried it was in my collapsed hip but couldn't see anything obvious. Packed it with antibiotics. When it was replaced in November, the same thing, and loads more antibiotics packed in. Tests showed nothing there anyway! Meanwhile, other than the obvious, I'm fighting fit and healthy - no sign of infection.
Fast forward to February and very suddenly my back tooth hurts like hell when I brush it - no other time. Must have lost a filling. The perplexed dentist says I haven't got a filling, or a cavity or anything to explain this. Does an x-ray, and right under the tooth there is a huge colony of the damned things! But not a single sign of them. He reckons they have been sitting there, possibly for 6+ months, forming their very own city. So THAT'S what the test was on about!!!!
Better safe than sorry. Hey it checked if toy haven't already.