Brown blood usually means it's old blood. But no one here can really tell you what is happening with your body. If you are concerned, I think you should call your doctor. GL
I spotted around 7 weeks as well and it turned out to be nothing, but we have different bodies and different pregnancy, so I can't tell you it's the same. If the bleeding persists or turns bright red I would make a call to your doctor.
Re: Help
Low progesterone
Baby boy born 01/2016
Currently: NTNP
I don't say this to scare you, but I would insist on being seen by a doctor if you are concerned.