IMO, its hard to over eat protein. (I'm no doctor, and I know close to nothing about pregnancy health). But in genreal, I'd say its very hard to eat too much protein. But maybe I can share what I do since I often need to get more fat into my diet. I tend to melt butter on everything; veggies, steak, hamburger, name it. Also, I make this "chocolate" stuff with coconut oil, pure cocoa, and a little bit of honey. It ends up being mostly fat, and mostly saturated fat at that (excellent fuel source and avoids all the O3/O6 balance issues). I warm the oil a little bit to get it liquid and pulse blended everything together. Then I pour it in candy molds and put it in the freezer to set. I store it in the fridge. It has the consistancy of chocolate, and it tastes (give or take) like and mounds bar. I eat 5-6 peices after meals when I eat chicken or something else thats lower in fat.
Hope that helps.