Oz, I can join you on this! CONGRATULATIONS!!
I am 7 weeks pregnant and just told the supervisors.... It was dreadful, the build up, but they were suprisingly OK. I am in my final year and the gene work has gone very well, so I had the results of that as well which may have explained their reaction. The baby is sue in december and I am hoping to finish the lab work by the end of October. They have told me to focus on papers before the thesis, but I am a little scared at the prospect of having no job to go to. There was a lot of talk about me staying on as a post-doc prior to this, so I just have to wait and see.
I'm putting up another post now on maternity rights - I have just found out I get NONE. Hopefully someone might be able to point us in the right direction...