Spotting at 7 weeks?

I'm 7 weeks and 1 day today. I noticed some slight brown discharge when I wipe. I'm 30 and this is my first pregnancy after 7 years of trying. Should I be concrened? I hear it's normal? But is it still normal this late? I have also had slight cramping. But I've been cramping every day since my positive pregnancy test.

Hubs and I DID have sex 3 days ago... I noticed a lot of white and clear cm that night. Could the sex cause this as well?