[Orgmode] Repeating TODOs

[Gary .]

As I mentioned yesterday, I am trying to follow
http://orgmode.org/worg/org-tutorials/tracking-habits.php

I have the following entry:

** TODO Go to the gym                   :habit:
   SCHEDULED: <2010-03-24 Wed .+2d>

and even managed to successfully go to the gym as planned :) However,
I couldn't update the status until today (the day after I completed
the task), so when I updated the status with C-c C-t it added the
next occurence two days from *today*. It might not always be the way
that I update the status a day after, sometimes it might be the same
day, or two days after, or whatever. Is there a way, short of
manually editing the file, of taking care of that? I know it's
because of the "." in the .+2d but given that sometimes I won't do it
on the planned date, I think it's best to have that in there - or is
there a better solution for when I miss the planned date?