Keep your piercing intact with this flexible pregnancy navel ring while your baby bump grows with this fun cute belly button ring is designed for pregnancy with a flexible bio-flex clear bar.  It has a "Baby on Board" caution sign which can also serve as a medical alert while you're still early enough that you are not showing clearly. 
 
Specifications
Ball Material: Surgical Steel
Ball Size: 5mm
Charm Size: 15 mm 
Total Dangle Length: 17.5 mm
Stone Type: Cubic Zirconia
Stone Size: 7mm
Bar Material: Bio-Flex
Bar Length: 25mm (suitable to cut to your desired length)