Feel for you, It's such a hard decision for everyone.
This is my humble opinion....
I think what you have to take into consideration is your health.
Are you asthmatic, diabetic, over weight or any other health problems?
Do you eat a healthy diet, do you smoke?
If all of the above is good and the fact that you ARE so early on in PG, I honestly wouldn't risk the vaccine to such an early foetus.
Take lots of immune boosting supplements and foods and make sure the whole family are healthy so that even if you do end up with it, you will all be absolutely fine.
I don't know about france but we don't test for it here and anyone who has more than a runny nose is being diagnosed with swine flu !
We don't know enough and I have a feeling that because the powers that be have agreed with WHO to mass vaccinate, that frightening tactics are the order of the day to get us all running to the doctor, otherwise, it wouldn't work.
Good luck with what ever you do but try to keep an open mind about both the flu and the vaccine and the risk TO YOU PERSONALLY. x