I managed to log in the very same evening of the day I was activated - there have been a lot of reports where people have complained about not being able to log into their portals, didn't really get posts saying whether they were able to log in after some tome after activations; apart from the previous poster that is.
I would try and log in and see if I can but don't remember my password - I have it written down somewhere - but can't remember where either :-s
Wait a few days and try again; let us know how you get on so other know whether it is normal to have to wait after activation or not.
F