A miscarriage isn't bright red blood in the beginning because the same thing happened to me with brownish discharge when I miscarried at 12 weeks, except I was in excruciating pain, then after a while it turned dark red.. yu would know if you're miscarrying because you're giving birth, yu have contractions & your body knows to push. It could be left over blood but yu should definitely go see a doctor
Don't worry sounds like old or left over blood from period I had the exact same thing around that time . Now I'm 22 weeks and just fine. If you get a lot of bright red blood then that is a concern and you should call your doc right away. But I wouldn't stress really you will be five
Try Not To Stress... The More Stress The More Likely You Are To Have one.
Normally Miscarriage Is Bright Red Blood And Really Painful Cramps