Discharge or implantation?

Kailee • 🔮Pagan🔮 💏married 12/03/17💏

Hey ladies!

For about 4-5 I had this light brown discharge, no cramping not bleeding. I’m due for my period today and I haven’t had any symptoms. I also just started antibiotics (checked with the dr to make sure it was safe just Incase I am pregnant). I’ve been nauseous and really tired but that could be the antibiotics. Have any ideas what the discharge could be?