Interesting, zahara1, I have been generally following the 'forbidden foods' guidance EXCEPT for runny eggs, which I consider nonsense.
I get that the risk of listeria and toxoplasmosis is very small, but it's raised during pregnancy and if you get it it can cause birth defects. So I'm happy not to take the risk with my baby's health (although I'm not stressing about the stuff I ate before I realised I wasn't supposed to!).
Eggs on the other hand... again a small but increased risk of getting salmonella but (if what I've been reading is correct) getting it poses no risk to foetus, I'll just be ill. I'm quite happy to eat scrambled eggs (my favourite!) and take the risk if it's only me I'm worrying about.
But basically I think all the risks are being very small, so I don't think it's worth anyone stressing over.
FWIW, I think prosciutto, parma ham, salami etc are all right if they're cooked/heated (i.e. on a pizza if the ham goes on before it's in the oven, not if it is draped over after)