What I meant to say is it's the uterus cleaning itself out in preparation for the baby. My daughter had the exact same thing happen to her a week or so after conception.
Please feel free to come back and talk some more or if you need support. That's what we're here for! :)
That same thing happened to my daughter. I heard it's the vagina cleaning itself out. And yes, my daughter is pregnant.
You should be able to take a home pregnancy test by now so that's the only way you're going to know for sure. Good luck!