Been of nuvaring, can i be pregnant?

Kennedy • Married to my soulmate since 7.4.2020!💍💞 We have a 4 year old son, who took a year and a half to conceive! We are expecting baby girl March 11th 2021 after 2 1/2 years of ttc with fertility treatments 💖
Ive been off nuvaring for 3 weeks now. It there any possibility i could be pregnant? We haven't pulled out or used protection of any kind. Im not sure if i ovulated or not, i had a period that lasted 3 days and about a week later i spotted. Any chance or are the hormones from the ring still in my system?