Clicking and popping is the 2 sacs rubbing together and releasing trapped air like a joint does. There are 2 sacs , the amnion and chorion.
That is likely what you are hearing.
Katie, mom to Olivia (97), Veda (98), Franky (2004), Wendy (2005), JoHannah (2007), Thea (2009) and Sunny (2011)
Out from 11/27 To 12/10. Please message another mod for assistance.