Thoughts?

Good afternoon ladies. As of today I am 10 dpo. I use 2 different types of opks to confirm ovulation. I have had faint lines on frer for the last 3 days that are pink and you can see them on camera and other people have seen them to. I’ve been having cramping and morning nausea and breast tenderness for about 3 days also. I’ve also taken like 5 other brands of cheap strip test which are all negative. Is it possible that all my frer tests are faulty? I have opened new boxes and all the tests have different lot numbers and expiration dates. Im just having a hard time believing that every one is wrong. Anyone have any thoughts or suggestions on what could be going on?

TIA