Hi there and welcome. Well, brown discharge is old blood. This could be discharge mixed with old blood from your period. It is not dangerous and pretty normal. Do you have any other symptoms such as itching? If not, I would not stress over this. good luck
If it's white and kinda thickish then it's prob just a discharge or even the brownish. And the blood just might be sporting from your last period.. This has happened to me before too but if your really considered then make a apt. With your doctor. Hope everything goes well!