My sis-in-law is currently in her 7 months of pregnancy. She looks like a cheerful mother compared to the first trimester where she looked haggard and unhappy most of the time. Her gynaecologist told her that she has strong tummy muscles and that's why her bump is not as big as other pregnant mothers. I didn't quite see her bump until these three weeks. As long as both mother and baby are healthy, we should not be worried.
Can't wait to see the baby! It would be merry to have an additional Teo at home!