not showing pregnancy

I'm almost 6mths pregnant and my tummy is really not "big" too. I know how it feels when ppl ask.my mother in law said more than once tht she can't tel I'm pregnant..look very small.at first i din like hearing such comments or esp in mrt too when nobody give up their seat for u cos not obvious enuff u r pregnant. its ok dear... most impt is tht the baby growing and developing well according to ur doc.stay happy!