Stretch marks 😖🤔

Nelly • First time Mom 😋 Can`t wait to hold my little blessing 😍. #MayBaby
Out of curiosity I just want to know if there's a time frame of where stretch marks start coming in. I'm 6 months nothing yet, but I know they will be here 😒. Just want to know when they start showing!!! 😟😟😟