Someone anyone please help!

First I'm sorry but I'm freaking out and need someone to talk to! 
I'm on cycle day 19 of a 28 day cycle and just wiped and had loads of brown discharge. There was a lot. Brown and creamy ( sorry) 
Has this ever happened to anyone. Only had sex one time with husband and that was on cd 10 so not sure it could be related.  This has never happened. This brown cm. 
Thank you