yes go to the doctor. It might simply be your uterus shrinking down to normal size, but best to get things checked out.
That could be a good question to ask the doc.
Symptoms of an invasive surgery accompanied by a massive dose of hormones from your brain.
That sounds pretty normal to me, because your body has to get back to normal. Just check that the incision is not infected - always wiser to be safe than sorry.
call your doctor and discuss it with him or her