Source: New york times
Pregnancy is a stressful time for the mother. In many cases the stress usually comes from the fact that the way others perceive changes. And this is pretty natural. In most cases, this causes a huge deal of anxiety.
A lot of this hurts us more than we realise. Although this is a fact that there are a lot of changes inside and outside of our world. So this change is drastic for one. Try not not to be fixated on the change part. Before expecting anyone to be there for you be there for yourself.