I basically had the same exact thing just mine was more brownish, it lasted 2 days and went away on and off for the 2 days and haven’t had any since, talked to my dr today she said it was just old blood from when implantation happened.
I’ve been getting spotting that I thought was my period, until I had second spotting in one month and went to my endocrinologist, after they did bloodwork and US they found out I was 11w3d pregnant. Spotting in pregnancy (especially first trimester) is normal and they didn’t seem alarmed at all by it. Unless it is heavy (soaking a pad, not just while wiping) or accompanied by strong cramps it should not cause concern. But it’s definitely something to mention to your OB.
I had the same thing happen recently and in my first pregnancy. It was for a couple of days, but not consistent (just here and there), and then went away. In my first pregnancy, I was told that it's normal as long as you're not soaking a pad.