Okay so after my last period i had some brown discharge now before my next i'm having pink and brown discharge. lasting for 7 days now?

Discharge post ".": Brown discharge is common after a normal period, and usual represents a small amt of old blood leaving your body mixed with regular vaginal discharge. Pink "discharge" before a pd often simply represents the onset of menses, and is a small amt if blood mixed with regular discharge. If you have other symptoms or this is not typical for you, give a call to your ob to discuss :)