It's not just brain fog, I suffer from that too but thats more a woolly slightly disorganised sort of feeling. I am forgetting appointments eg something I was aware of in the morning, I will then forget to attend in the afternoon. If I have a tidy up, I then can't recall where I tidied things away to. I have lost my sense of time eg. I thought I'd made a phone call this morning, but turns out it was yesterday. Texting a friend yesterday and she told me her dental appt had been cancelled, we then exchanged another line each of text about other things, and I then asked how her dental appointment had gone. It is starting to worry me. What do people think? Is this normal for a post menopausal woman of my age??