Pregnant (2-3) on test kit but unsure of pregnancy after scanning..could it be ectopic ?

What do you mean unsure of pregnancy after scanning? What do you see in the ultrasound scan? I once came in too early to the clinic and can’t see anything not even water sac, so doc ask me to test HCG level (by blood) to confirm. After seeing water sac, also cannot confirm viability of pregnancy yet until you hear a heartbeat, which is week 7-8. Hope this helps. Also, this Clearblue pregnancy test indicating the weeks is not accurate, esp for ppl like me and you whose period is not regular 28 days.