Re: Pregnant in Lausanne
I think the first thing to do is relax. You do have to be more careful in the first three months, but looking after yourself is the best thing you can do and you are in great hands in Switzerland, so there is really nothing to worry about.
Regarding yoga is OK to continue with as long as it is not too strenous. In fact it is great for strengthening the core muscles you need to carry a baby and give birth (and recover afterwards). I had both my children in my 30s, I did yoga with my second and things went a lot better for me healthwise.
Next step, if you haven't done so, is to find a good gynocologist. Mine is great, but in Vevey, perhaps someone else can recommend one too you.
It's also worth investing in a good 'what to expect during your pregancy' type book, there are loads out there. I got a 'week-by-week' one which was a great help, it gave me lots of interesting insights and confidence.
Hope this helps. If you have any other Qs, feel free to PM me.