Pregnant or?

Okay you guys ! I need a little help, I’m really freaking out here, I took a test a few days ago, it was a blazing positive (2 lines) it was a cheap dollar store test, I went to the doctor and received confirmation of pregnancy but now I just took a first response because of the cramps I’ve been having and now it’s only one line? But the other line is super faint? Am i still pregnant? Is this a “dye stealer”?? I’m so scared right now. First pic is the first test I took a few days ago, first response is today.