Bleeding? Not sure this is the correct place to post...

[JennyRMorris]

Hello Mumsnetters,

I'm looking for advice/previous experiences. I hope someone may be able to help.

I gave birth to my first baby five weeks ago. Sadly DS was born sleeping. I had normal post partum bleeding for approx 2 and a half weeks.
Since then, my partner and I have had unprotected sex once which was one week ago.
Last night I had a little bit of brown discharge that almost looked a bit like mucus. Still having some this morning too, brown, not loads but a fair-ish sized streak there when I've been for a wee and wipe.
I'm not having any period-like symptoms other than this, no cramps, I used to be prone to getting spots on my chest around the time of my period but no spots currently.
OH commented yesterday that he thought my boobs looked bigger than normal.
Has anyone else experienced this? I'm unsure if it is a period of sorts or if it could be implantation bleeding.

Any help is greatly appreciated, thank you x