Hi, I'm recovering from fractured patella as well (actually, I'm the "repeat fracture" poster on the bulletin board here). I first broke it last June, 2011 and then had the hardware removed in Dec. It felt SO GREAT to have it all out! My knee felt like my knee again! And my ROM got even better quickly after that.
I was almost at full degrees, just about getting my heel up to my butt! I was weaned off crutches and only used a cane when out in large crowds (ie. malls) more as a message to other people to look out and give me some space.
TAKE IT REALLY EASY! Now you don't have the hardware in, your knee can be more vulnerable for a while. I was 2 months past my hardware removal surgery when I slipped on some ice and bent my knee too quickly and too far to stop myself from falling, only to refracture it! Trust me, you don't want this to happen!
I've heard others say an important tip is to "keep ahead of the pain" and take something before you fell pain. Sorry you had such a reaction after the surgery. I don't react well with general anesthesia either and suffer nausea and loss of appetite for 2-3 days.
The main thing you need to recover from after a hw removal surgery is the incision! A couple weeks to get that healing, remove stitches, staples or whatever torture they used! and then you are back to being able to shower almost normal! I'm still in the immobilizer for the second time round and having to shower sitting on a bath seat and use the handheld shower hose. At least now I don't have to put a plastic bag over the incision anymore.
So please, be careful. I don't want to read about anyone else suffering a repeat patellar fracture, ok?