it's normal to have aversions to certain food and smells. you might even be surprised that food you used to like, you now feel sick when you see/smell it. or you might like to eat things you didn't like to eat before.
Drink more water and try to eat in small meals.
It's a good time to book an appt with the gynae. you can do a search arnd the forums and check on the various gynaes available, unless of course, you r intending to go to Kandang Kerbau Hospital.