Getting on Propecia 3 mos. after transplant

[win200]

Hey all,

I'm exactly 12 weeks out from a transplant procedure, and I've got great growth so far at this relatively early juncture, which I think bodes well. I was transplanted all along my hairline, which is still pretty thick, and now I've got this "shadow" of furry hair growing in in front. Pretty cool.

Anyway, I always thought I would never get on Propecia out of concern with the sides, but now I'm really on the cusp of pulling the trigger and doing a very gradual taper onto the drug. I'm just wondering if there's any particular reason NOT to get onto Propecia relatively shortly after a transplant--i.e., should I wait a year or so and see the transplant results? I'd rather not lose a year during which I could be on the medication.

Also, could someone explain the "brain fog" side effect a little? That's the one that concerns me. I'm a corporate attorney and spend my days doing pretty grueling mental work, and I need my faculties at 100%. I'm just not sure what people are referring to when they complain about this side.

One last thing: do people usually have blood testing before starting on the drug, or do they just take it? I've never had my testosterone levels gauged before, and I don't know if that's part of a normal pre-medication workup.

Thanks!