Really dark lines?

Alex

Anyone else due Dec 22nd or close and have extremely dark lines on your pregnancy tests like 3 or 4 days ago? I took mine on the 10th which would have put me at less than 4 weeks and I had extremely dark lines. I also went today at 4w4d to confirm pregnancy and she said that I had really dark lines on my pregnancy test for only being 2-3 days late on my cycle. Is this normal?