Smow- I have been experiencing a similar thing. I have completely forgotten names of people I have worked with for a long time, and my brain seems to give me words which are wrong, but sound a bit similar to the one I am looking for. I often can't remember AT ALL what I did this morning and have to ask someone else. This has only happened in the last few weeks. I know I am very stressed at the moment, and also I believe it might be my age (48)/hormones. I also have been trying to eat less, and fast a bit, so that may have altered things too. Sounds like you are stressed and racing around, and your brain is lagging behind a bit. Try and do some relaxation techniques- yoga/massage/swimming/singing and try not to worry. In the meantime see your GP to stop yourself worrying and making your insomnia worse!