Sorry you're feeling like this hun. Maybe it does stem back to when you were younger, and your subconcious has triggered similar feelings as your body changes shape during pregnancy.
It's good to hear you say that you would never not eat because of this, but must be horrible to get such feelings. If they continue, is there anybody you could talk to in confidence? Maybe a counsellor, or close friend, or professional of some sort. Please don't bottle your feelings up hun. Hope you start to feel brighter soon.
xx


