I snuck out of the house with a friend (remember, I'm officially housebound) and got my hair cut today. First time in four months! Looks good, feels wonderful. What doesn't feel wonderful is how much hair I've been shedding ever since the surgery. I know that anesthesia can do that, but doesn't it ever stop?!
Well, it's a lot things, probably. Stress, changes in body chemistry, medication,genetics, etc. My mom recently has had the same problem.
If it doesn't improve soon, talk to your doctor about it. There are lots of meds out there now that can help, not to mention that hair loss can be a symptom of other things, like lupus or diabetes.
In your case, it's probably due to your meds and all the stress you've had recently.