Pregnancy Cravings?

I wanted to know whether or not cravings be some sort of chemical in the brain that drives you crazy. I'm serious, I devise sometimes if I don't get what I am craving, I'll any cry, get extremely angry or really depressed. I know the hormones are crazy during this time, but really, are the cravings that desperate?
Answers:

What can I do to be more disciplined about my ingestion?

Some of it is psycological, but also there is some truth to it.
As your body and that of your child wants nourishment, your body contained by fact tell you to "crave" for certain foods that contain unshakable elements your body might be in "entail of".

Is it too soon to be showing?

Yes is something to do with the brain!!

Same entity happen to me and I'm not pregnant!
I guess is the hormones!

My obverse has become really hulking - help me?

It's adjectives in the hormones.expect of how much your body is going through by being pregnant!

I remember when my mother be pregnant with one of my siblings...she LOVED consumption tortillas with mayo. Or a slice of bread beside just mayo.

Not sure if cravings are ALL just about what your body needs nutritionally.because I don't meditate mayo is all that nutritious...

:)