I see what you are seeing, especially on your most recent photo (the zoomed in photo), but I think if you were pregnant you would be getting even a slightly darker line by now. It's been a couple of days since the other test photos which you thought could possibly be only after a few days after ib, but if it were I think your tests would be a little more obvious since the hCG would have increased.
I HATE saying that, though. I think what you're seeing here is an evap. I had a test similar on an IC a few days ago, I could see a faint line/shadow on mine but it looked grey rather than pink and I posted it here to ask others if they agreed it looked like an evap. I also posted it on CTP and the vast majority voted negative, some unsure, a teeny tiny handful positive. Sometimes these grey, evap looking tests do turn out to be positive eventually, but I do think yours should be slightly darker by now.
You aren't crazy and I don't think anyone here thinks you are! I think it's easy for us to say what we see and think because it isn't our test. I also think that it's natural to hold onto hope that you will see a more definite line when you have a test like that because of the 'what ifs'. And it certainly can't be easy on you if your OH isn't quite on board with ttc at the moment. I'm guessing he's "if it happens it happens but we won't actively try"? Whereas it's different for you, it is for many, many women! Men and women do tend to have quite different attitudes towards it - my husband seems to think, God bless his cotton socks, that he has super sperm which could impregnate me at any time he likes and I'm sat here thinking "um, I'm almost hitting my mid thirties... my days of decent eggs are numbered and the dried out dusty ones are beginning to form an orderly queue..."
If your OH would be happy to simply get on with things if you were pregnant right now, could you suggest you take the NTNP approach instead?