Spotting at 9 weeks

I’m 9 weeks today and I have had some super light spotting a little last week when I wiped and it stopped. Then yesterday I noticed a little brown spotting on my underwear. Has anyone else experienced this? I had an ultrasound last week, fetus measured 4 days ahead with heartbeat of 173.

This is my third pregnancy, my first was successful with no spotting and my second ended in a miscarriage at 10 weeks. I started spotting with my miscarriage and two days later it got worse and continued for almost two weeks before I passed the baby - 7 hours after seeing it’s heartbeat on ultrasound.

I’m extremely nervous!