don't worry, it's not every pregnant women had a good appetite, , i'd pregnant (3 years ago) and don't want to eating anything till the last 5-6 weeks, but i suggest u can try some new tasty food or different type as usual, it amazing that many pregnant women will change their appetite, just like me, i don't like fish and steak at all before i have a baby, but once i tried i love it very much, but after i birth my daughter, everything was resume normal. if your wife willing to eat but just not very much, it's fine and remember drink some milk and vegatables. 1'm 115lbs and gain about 25lbs when my daughter was birth, an she was 8lbs3oz , so don't worry
p.s. it's my first and only pregnant,
i hate fish very much