8 weeks pregnant and spotting

Trying to avoid going to the ER. I go for my first ultrasound in 3 days.. I started spotting today.. it’s only happen twice so far and it’s barely anything, but it has me worried.. I’m not having any cramps or stomach pain.. I have a little back pain but it’s not bad at all.. any words of encouragement or similar stories and everything turning out ok would be wonderful.. this is my 2nd pregnancy, I never did this with my daughter so it’s made me so nervous 🙏🏼