Help!

Got my first faint faint positive on Christmas morning.

I’ve had 3 miscarriages so far since I was 16, and I’m very scared during early pregnancy. So I didn’t want to stress myself so I took a test every morning for the next 2 or 3 days.

Dec 26, 2019

December 27, 2019

December 28, 2019

The line kept getting fainter and fainter. I tested this morning and didn’t see even the faintest of lines. I’m confused and scared because we have been trying so hard. Please give me some advice on how to move forward with this situation and maybe what you think happened. I’m now 4 days late for my period.

Here are some doctored photos with circles are where the lines are for those who can’t see them. And I tried the 88 cent Walmart tests and they were negative.

I know that the lines are faint. I know that you can barely see them and I know that the tests go negative. I’m not asking for anything more than maybe just a hypothesis on what could have happened. 2 different packs of FRER bought in 2 different states (we travelled for the holidays) can’t have the same indent lines and then have the line disappear.