I had period like bleeding when I was pregnant with my daughter and she’s 18 months old now and some bleeding and clots at 16 weeks pregnant with my son and I’m 31 weeks with him now. It could be normal. Worth mentioning to your doctor

Implant bleeding comes before your period so it’s not that.call your doctor and go get checked.thats the only way to know.many women will tell you that brown blood is old so it’s normal,but no blood is normal.its just common to spot.it could be irritation,hematoma or even the beginning of a miscarriage.so go get checked