anyone at 9 weeks had spotting right through?

✨sav ✨
I'm 9 weeks and have been spotting on and off since about the 4 week mark. 
Just wondering if anyone else is experiencing this? 
It makes me worry so much, I had an ultrasound 2 weeks ago and saw that there was heartbeat and all that but the spotting just freaks me right out and I don't get another ultrasound for 2 weeks!