Air bubbles feeling in vagina πŸ˜‚πŸ˜

Adriana β€’ I'm 34 years old expecting my 4th baby on November 1st I have a 14 year old girl a 9 year old boy and a 4 year old girl
Ok so I know this might sound weird but has anyone else has the feeling of can only be described as air bubbles In vagina I have asked my doctor and he says its normal does this happen to anyone else πŸ˜†