Confused about implantation spotting help plz xx

Natalie
Hi I came off af 7days ago and I'm ovulating today and I last had intercourse 7days ago and about 2days ago I went to the toilet and saw in my underwear that's there was a bit of brown blood mixed with the cervical mucus I'm wondering what it could.of been. Please I have posted on general ttc but got no comments plz help God bless thank u xx