Thread: brown discharge

I'm a little worried because all day today I've had brown discharge. I thought at first that it was poop (yuck) but it wasn't. It's dark brown and it's the same texture as my normal discharge, but the color change. And I've been having back pain all day (it's normal for me to have back pain, but you never know so I thought I'd mention it). I'm nearly 16, and I haven't had my period yet. I've been having discharge for 4 years now, and I'm about due for my period. I've been to a doctor, everything is fine, I'm just a late bloomer. Can anyone help me?