Looking for faint line success stories!

To try and make a long story short, two days ago I took an iproven cheapie test. It looked negative but I swear I saw a nearly invisible shadow. This was dpo 14 and the day AF was due.

The next day, yesterday I took a first response hoping to see a definite line. I had a vvvvfl and posted it on here. This was dpo 15. The faintness of the line did have me worried so late in the cycle.

I took a digital later that same morning and got a not pregnant result. But I took the pregnancy test out of it and saw another vvfl. I do not think digital is any different from regular so another positive result.

Now to this morning. I know I should have waited longer but I took another first response. The line is still there but looks the same vvvfl. Today is dpo 16

So I've seen a lot of chemical pregnancy stories that have such a faint line so far in the cycle. We have been trying a while and really need this baby to stick. I want to know if anyone has experienced this with a positive result?

Thank you