Congratulations on your pregnancy BissyRocket.
There is no advice in the UK to avoid cold cooked pre packed meats and you'll find that most woman that have been pregnant have eaten them at one time or another with no ill effects.
This is the advice from the
NHS
Cold meats and smoked salmon
Some countries advise pregnant women not to eat cold meats or smoked fish because of the risk of listeria. In the UK, we don't advise women to avoid these products because the risk is low. The risk of listeria is much higher with cheeses such as camembert, brie or chevre (a type of goat's cheese) and others with a similar rind, or pâté, which you shouldn't eat during pregnancy. However, if you are concerned, you might also choose to avoid cold meats and smoked fish while you are pregnant.