I’m very sorry if this is the wrong group

I’m not sure if I should post this here. If not just let me know please. I’m worried because I got faint lines and I don’t think they are getting darker. I took two digital and both were negative. The top one was from yesterday morning, middle yesterday evening and last one this morning. What do I do?? I’m scared it’s a chemical. Should I continue testing everyday or wait a few days? (They are blue)