Spotting - first trimester

So the saga of spotting occasionally is continuing... I’m almost 11 weeks. I didn’t have any of this with my first pregnancy. At my 8 week ultrasound all looked good and they’re thinking it’s more external (increased blood flow/estrogen?). It is definitely activity dependent- ie when I exercise or like now spent morning cleaning whole kitchen and running after 3 year old.

I just don’t know what to do about it. It’s driving me crazy. Next ultrasound isn’t for 2 weeks. I wish I knew for sure everything was okay.