Just found out I'm pregnant again :)

I had a misscarriage in June after being 11 weeks pregnant. In September I had a DNC procedure due to having a polyp in my uterus. I found out this week that I am now pregnant again. I am so scared and every time I have a chance I go to the bathroom to check for spotting or blood. I am stressed I will have another misscarriage. Is light spotting normal around 4-5 weeks? What tips can you guys give to ensure a more stress free environment? I have my first appointment with my doctor on 10/20/16 but they say they probably won't do an ultrasound until after 10 weeks. How will I know if the baby attached to the correct side of the uterus! Please help calm me down :(