Digital test week indicator

Victoria

Hi all, according to the app I would be 4 weeks and 6 days today. I decided to do a digital test with week indicator and it said 1+, which in instructions says means 1-2 weeks since conception. Do you think this is right or should I be worried?? I have a decent line progression with the cheap strips. I’m in Netherlands so don’t do blood test here. Need to wait for first ultrasound. Any thoughts?