Early Scan and Symptoms (5+ weeks)

[FunnyWineFriend]

Hi! I am new here today. I had my LMP 21st December 2024 and got my BFP 18th January after period being 2/3 days late. My cycle is normally 24-26 days long.
I done a digital which was 2-3 weeks on 19th January and have booked an early scan for 8th Feb. I know there is mixed opinions on these but I feel like I just need to confirm everything is at least in the correct place but I’m wondering how I could be showing 2-3 weeks (on clear blue so 4/5/6 gestational). This would mean I conceived on my period and I’m not even sure I had sex then…
Could my last period have been fake? But also, it probably would have come up 3+ if that was the case.
Also, very little symptoms bar sore boobs and starting to feel the fatigue and general can’t be bothered doing anything feeling

Clear blue shows the date from conception so it's saying you had sex and conceived 2-3 weeks ago.

You are right that this would make you 4-5 weeks pregnant but that doesn't change when you conceived. The first 2 weeks of pregnancy is actually counted from before you conceived.

You will get an approximate due date if you go for an early scan but should use your LMP to work it out until your official dating scan at 12 weeks as your early scan may not be accurate.
LMP date is worked out on a very average 28 day cycle with ovulation on day 14 and isn't accurate for everyone. You may be slightly ahead of this since you have shorter than average cycles.