Air bubble???

Anne 💙💙💙 • Mom to 3 boys. August 2015, December 2016, December 2018
I'm 21 weeks and for about 3 weeks if feels like I have an air bubble in my vagina. It pops sometimes but comes right back. It's so annoying!!! I forgot to ask my dr about it and I didn't think I warrants a call to the office. But has anyone else had this?? How did you make it go away?!