texasghouldem hmmm it might have changed without me spotting it but I think the advice is to be vaccinated in second and third trimesters only, unless your practitioner advises otherwise, which is usually only if the pregnant woman belongs to other risk groups as well. With other complicating health factors, it may be worth the calculated risk of having the vaccine in the first 12 weeks of pregnancy. Otherwise most medic don't like taking any 'unecessary' risks in the first trimester.
In general there is not so much risk from SF to the mother in the first trimester (lung capacity reduces gradually to its lowest in the last weeks before birth, when the body is also working its hardest pumping more blood etc), even though high fever is never good for a fetus and has been linked to miscarriage risk in the first trimester.
If I were you I would do some more reading on the NHS pages and the WHO to check about first trimester vaccination and consult your GP about your medical history.
Tangle don't know what the seasonal flu vaccines are called. Cevlapan is a pandemic vaccine against swine flu, developed by Baxter in competition with Pandemrix which does the same thing, developed by Glaxo SmithKline. Cevlapan is not based on eggs, it does not contain mercury, which is used in Pandemrix to keep the vaccine sterile, and it does not contain an adjuvant. The adjuvant is a natural (shark) oil and vitamin E ingredient added to Pandemrix to boost the body's immune response to the vaccine's antigens, it means that less of the virus is needed to get the same immune protection than if the adjuvant is not used. According to the mumsnet chat with Professor David Salisbury, the adjuvant also increases the chance of the body being protected against a mutated version of the virus if that should ever crop up. The adjuvant has been linked with a lot of controversy, somewhat unfairly based on my reading as there is no evidence really that is has any harmful side effects. You can find lots of info about adjuvants on the WHO website and general google searches will no doubt give you the scare side of the story. Anyway understandably some pregnant women prefer the idea of a vaccine without it, to be on the safe side.
The WHO recommends pregnant women in 2nd and 3rd trimester should be vaccinated with whichever vaccine is available to them, although they initially said they prefer the non-adjuvant vaccine purely on the basis of the lack of data of adjuvant vaccines in pregnant women.