Positive pregnancy test

Shelby

So I’ve been doing a lot of reading. I took my at home pregnancy test 3 days before my due missed period. The line almost immediately showed up. Then the next day (2 days before due missed period) and the line was super dark and came up immediately. According to my apps I’m 3 weeks and 5 days pregnant but for some reason i feel like i could be further along. Only because my research says at this point in time a positive pregnancy test is uncommon or the line is super faint. But both test weren’t faint at all. So i guess my question is could i be further along? Also with my last pregnancy that ended in a MC i took my at home test and the line was very faint that was 2 days before my due period.