My baby is nine weeks old and breastfed. i have brown spotting, is this considered normal?

Yes: Just brown spotting cann be normal especially if breast feeding as the breast feeding produces prostiglandins and clamps the usterus so you will get out all that old blood.

It's likely nothing: To worry about. The uterus can cramp w/breast feeding, forcing out blood but regardless, spotting in the post partum low probability for disease. Good luck.