Mucous plug

Kari • Married to my best friend of 7 years and high school sweet heart. So excited that we have our first baby on the way!😍
I'm 31 weeks 4 days and still haven't lost any bit of my mucous plug. Is that normal? I'm a FTM so I'm not sure when it's supposed to happen but I e read several posts on here of girls losing their mucous plug around 25-28 weeks...