Bear with me and advice or similar stories?

Yesterday I got three faint lines on frer tests.

This morning with fmu and smu stark white on frers

I wanted to know what was going on so I went out and got more tests.

Another frer stark white.

Tested with concentrated urine all day.

Then I just took this with diluted urine. I think I see something but I’m unsure. And if I do I’m afraid it might be chemical. I’m a day late. If this is a line it’s too light? I’ve tried for over a year had an early miscarriage, 3 chemicals, failed iui, hysteroscopy, another chemical. Are these too light for 13dpo especially with getting negatives all day after positives yesterday?

Thanks so much (All within time frame)