Yes it's normal, I didn't gain any weight but doc shared baby is growing well and putting on weight. Pregnant mom's only need 300calories more a day if I am not wrong and in 3rd trimester, only 400 calories more. Chat with ur doc if u still have concerns. For the low appetite, do ur best to eat smaller nutrition rich food and take all ur prenatal vitamins + hydrate well. My appetite also dropped and I cld only stomach 1/4-1/2 of a plate. I did make the extra effort tht in the 1/4 -1/2 of a plate, the food pyramid was followed and I made the effort to eat a range of the colours in a week. I hope this helps! All the best =)
I gain 3kg till 28-30weeks throughout pregnancy then I gain another 3kg within a month cause of sudden increase of appetite but maintain since then. As long as doc find the baby is growing nicely it's fine.