brown is normal. it's dried blood light spotting at 4 8 and 12 weeks is normal. your hormones still adjusting

call your doctor, but don't be to worried it could be implantation bleeding and if its just brown and not bright red or pink you should be fine,

I would call your doctor, BUT it might be implantation bleeding which is totally normal, especially for how early you are. I would call and see if there should be any cause for concern but I think you will be okay. Some women have implantation bleeding and others don't.