Well, you are, really eating for 2, but as long as you eat healthy foods, you should be able to sustain both you and the fetus.
Hello, you really should not weary about not getting hungry. You eat when you feel hungry; people often say that when you are pregnant you must eat for too, it is nothing but a lie. You carry on eationg like you used to before the pregnancy because once the baby is born that extra weight can be very difficult to loose. All that to say that you have no problem
As long as you are eating well, and enough calories to support both yourself and your fetus, there shouldn't be anything to worry about.