I read that mozerella on pizza is fine as it is cooked and that feta is ok if purchased in this country.
this info is from babycentre.co.uk
cheeses which are SAFE to eat in pregnancy
Hard cheeses: Austrian Smoked, Babybel, Caerphilly, Cheddar, Cheshire, Derby, Double Gloucester, Edam, Emmental, English goat's cheddar, Feta (if bought in the UK), Gouda, Gruyere, Halloumi, Havarti, Jarlsberg, Lancashire, Mozzarella, Orkney, Paneer, Parmesan, Pecorino (hard), Provolone, Red Leicester.
Soft and processed cheeses: Boursin, cottage cheese, cheese spread, cream cheese, Mascarpone, Philadelphia, Quark, Ricotta.
Yoghurts, fromage frais, soured cream and creme fraiche any variety, including natural, flavoured and biologically active are all safe to eat.
Cheeses to AVOID in pregnancy
Mould-ripened soft cheeses: Brie, Blue Brie, Cambozola, Camembert, Chaumes, Pont L'Eveque, Prince Jean, Tallegio. Vacherin-Fribourgeois, Weichkaese.
Blue-veined cheeses: Bavarian Blue, Bergader, Bleu d'Auvergne, Blue Shropshire, Cabrales, Danish Blue, Dolcelatte, Doppelrhamstuge, Eldel pilz, Gorgonzola, Manchego, Romano, Roncal, Roquefort, Stilton, Tommes, Wensleydale (blue).
Soft unpasteurised goat and sheep's cheeses: Chabichou, Pyramide, Torta del Cesar.[/b]