Should I be worried about today’s test?

Hey, I’m 4 weeks 1 day pregnant and found out on 11DPO. Today I am 14DPO and it is the day of my missed period. I’ve taken several tests from cheapies, digitals and pink dye test.

I’m currently using the FRER triple check pack and got positives on the pink foil test which is the early detection 6 days sooner, I got a Yes+ on the white foil which is the day before missed period and today was the green foil the rapid test on the day of your missed period.

The test was still positive but I can’t help but notice the line is much lighter which has me concerned. The bottom test with black marker was 13dpo at 5am the middle test with blue marker was 13dpo at 6pm and I can see the darkening of the line which put me at ease but today 14DPO at 4am it is so light.

My question is should I be worried or do the rapid tests detect higher levels of hcg? Is that why it is listed to be taken the day of missed period?

Anything you can share to help me understand would be so appreciated!