Congratulations on such a speedy recovery thus far!!
In my experience, I was hospitalized for 11 days after surgery due to complications, but about 15 days post op I was walking in the park short disctances, and gradually extending the time. I was exhausted after each walk, but my strength started to come back.
Just work at your own pace, which appears to be fast. About 2 months after surgery I did take a small kayak trip down a shallow calm river. I lasted about 30 minutes before jumping in my dads canoe, and handing my paddle off to my little sister. But it was progress and my doctors were shocked, but happy!
I have returned to kayaking, biking, hiking, and resuming all of my regular activites, I do lnotice that lifting heavier items does cause me to develop fullness in my head and slight headaches that go away within a few minutes.
I even rode some roller coasters this past summer (1 year post op) and Although they made me a little dizzy and a little fullness, I felt pretty good.
Go with what feels right to you, consult doctors if needed, and dont push yourself too much! Good luck and happy recovery!