When a woman was divorced because she was thought to be an "ailoniss" (a woman who cannot conceive)R' Yehuda says the husband cannot remarry her after the divorce. If the woman marries another and conceives and wants to claim her Kesuba from her first husband, R' Yehuda says we tell her "shtikutech yapheh midiburech" your silence is better than your speaking. This is because if she claims her Kesuba, the first husband might say that he would not have divorced her had he known she could conceive and that would question the validity of the Get and also her children.
This advice of R' Yehuda is something we all should take to heart. Many times our speech brings about more problems for us than gain.