Mucinex for ttc?

💙Shadoe✨ • Just conceived our rainbow baby:) M/C in March 14 & chemical November 14... Going to marry the man of my dreams<3 After 14 months of trying finally got our BFP 8/7/15! Praying for a sticky baby🚼
I've heard something about taking mucinex when you're ttc? Is this fact? If so when do i take it, or do i just continuously take it? How does this help or work?