Thanks stepaway, that makes me feel better actually. Yeah I'm the same, I don't want to get hopes up, and also would feel awkward if something went wrong, especially bearing in mind that my sister is also pregnant. It is exciting, but it's also a weird dynamic.
Makeral and sardines are a good idea but I get what you mean, it's hard to eat things that you're not not feeling like. I guess if you want oils you could try nuts or seeds? Seeded Crackers??!