I think you are right on the edge of the 3+, the weeks indicator is actually the conception indicator. So if you are 5w+2d, the conception date would be 3w+2d, and that is only if you pinpointed ovulation. If you used your LMP as your reference point, you could be off by a few days.
I would stop testing if I were you, it makes you more worried than you should be! Try to enjoy your pregnancy hun!
Good luck!x