Call the doctor?

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 💖
Should I call the doctor if I got a faint positive on a walmart cheapie test and then a negative on an FRER 2 days later? I am a week late and no signs of AF only signs of pregnancy. I would be 5 weeks tomorrow.. I wanted to wait until I was 2 weeks late but I just want to make sure if I am that everything is fine and okay.. Like to make sure Im not having an ectopic pregnancy or anything is wrong..