I hope those brain cells aren't gone for good

So I am now 25 weeks pregnant with my second son - my first is 2 and a half. I'm also 40. So when I was pregnant with the boy, I first experienced pregnancy brain - but I was working then, and so pretty much holding it together, although I would occasionally forget some obscure word like 'dresser'.
This time, however, I have reached new depths of stupidity - this morning I was randomly clicking around some blogrolls (sick kid, stuck in apartment for 3 days now) and found a link for someone I used to read in the old days. I eagerly went to her blog, caught up a little, and noticed her little link list - clicked on, and found a site about the first months of a new mother in Manhattan..... and then I realized it was mine. I started a blog, way back then, as I somehow couldn't continue my old one once I had a baby - instead of writing about restaurants and dates and crazy people, my life had become all diapers and teething and daytime TV, and I just couldn't make the leap. Anyway, point of this rambling diatribe is that I started a blog and forgot all about it, until today.

I'm hoping it's pregnancy and not old age.