I have orange/ brown discharge with no itching or burning and my period is not due for a week could this be a std?

Discharge : Only way to know is to see your ob/gyn for evaluation of the discharge. Have you been sexually active with a new partner or had unprotected intercourse that was risky? These are things that would increase your risk for an std, but only testing can confirm or refute this.

Many possibilities: Could be a non sexually transmitted vaginal infection, a side effect of medication, a polyp and several other possibilities. If your concerned you may have been exposed to an std you should get checked. If the discharge persists or is recurring, get checked.