I too have been natural for 15 years on and off and have been totally natural for the last 5!
You know, i had no shedding with my first preg, only with my second.
V. intersting you should mention the weather. I read someting somewhere a few years ago about using products for skin and hair that are made with local/ regional ingredients because they respond better if you do. It was really interesting. I'll try and find it again and post the link.