Hello

My partner and I are trying to make a baby and I'm just wondering when I do fall pregnant what foods I am still allowed to eat.
Can I eat foods like; cream, yoghurt & icecream?
Can I have cooked prawns, cooked salmon and barramundi?
Can I have cooked deli ham (e.g. in a toasted sandwich)?
Can I have cooked but cold egg (e.g. in salads or egg and lettuce sandwiches)?
Sorry for all the questions but I have no idea:/