I think it's normal to be tired for a while, especially as you push yourself and are doing more and more. For me, I would crash when I got home from work the first month after my PE. At this point though, I think it may be more related to loss of conditioning and depression. I mean, it's one thing to be exhausted after a few hours of work, running to the store, and then making dinner, doing house work, whatever. If you find that it's not form those things, but just a general feeling of being exhausted all the time, I think that's probably more about not sleeping well at night and just being really overwhelmed emotionally and mentally. But that's just my opinion.

It's really a scenario where it is hard to tell what is causing what. Maybe you're sleeping because you're still healing, but maybe you're sleeping because you're depressed. It can be hard to tell.

If you're doing everything you can to treat the depression (meds, therapy, or whatever you're comfortable with) then maybe the sleeping is just healing. Again, hard to tell. The best you can do is to take care of yourself mentally, emotionally, and physically. You'll probably find that you start sleeping less the further out you get and the better you're doing mentally and physically.

Also, I don't know why it matters if this is normal or not. Is your "depressed brain" just trying to find something else to worry about? Is it trying to find some way to "prove" that you're not doing well or not healing? Depression will tell you lies about your health and your future, so be cautious about reading too much into these things.

Right now, this seems to be the amount of sleep you need. I wouldn't worry about it too much unless you start to get to the point where you aren't even getting out of bed. If you start using sleep as a way to avoid everything else in your life, that's the time to talk to your doc or therapist.

@rmb, yeah it does seem like a combination of things. Also I don't seem to feel tired when I'm working, so that does point to depression.
@toss, that thing about depression being a liar, wow...Perfectly put. I've always had the tendency, so this really magnified it.

I've done my own battles with depression, so I've had to sort out reality from lies a few times myself. It can really be a challenge, so getting all the support you can is always a good idea.