Faint lines 2 days in a row

Hi! So I had a positive pregnancy test last month but lines were very faint and everytime I took more tests, it was getting more and more faint. I started bleeding a day or two after and blood work and ultrasound confirmed I was not pregnant. I think it ended up being a chemical pregnancy.

Anyway, my period was supposed to start yesterday but it didn’t come so I took a test and it was a very faint line. Took one this morning and another faint line but a little darker. I was hoping it would be more visible by today... but would you guys think this is positive for sure?? I’m so stressed that the same thing would happen again and we’ve been trying for almost a year now.

Just also wanted to know if something similar happened to anyone else with a successful pregnancy!

Top test is from yesterday and bottom is from this morning.

Thanks in advance!