Any opinions??

So the top two tests are the same and I took it on 3-20. Is there anything? I think I see something faint. It's from the dollar store. Then today 3-21 I took this test and I see nothing it's an answer brand. AF was supposed to arrive on 3-18. I have sore boobs and cramps and Im very moody. Someone tell me what's going on before I go crazy.