Confusion with digital pregnancy test

So I should be 16dpo today (tested with Clearblue digital opk and temping which all confirmed ovulation on 22nd March) I got my first faint positive at 7dpo then a digital pregnant at 8 dpo I took a week indicator digital on Saturday (12dpo) which said 1 -2 weeks which fit with ovulation dates - I took another one today that said 3+ weeks.

I’m confused as I am only 4+2 weeks pregnant today so was expecting 2- 3 weeks not 3+.

Has anyone else had anything like this?