still barely showing ?

Mimi โ€ข I'm 18 years young ๐Ÿ’๐Ÿพ๐Ÿ‘‘, I go by Mimi ๐Ÿ˜‹, I found out I was pregnant 5/15/17 ๐Ÿคฐ๐Ÿพ๐Ÿ’•!
I will be 16 weeks on Tuesday but still barely showing ? ๐Ÿ™„ Went to Obgyn Thursday and the baby is completely healthy ๐Ÿ’•๐Ÿ™๐Ÿพ...so what's taking so long for my belly to pop out #firstpregnancy