I really need help..

I got my FAINT BFP yesterday morning. I took another one at 3 pm yesterday it was a tad bit darker. Well, I told one this morning & it's as light as the one from yesterday morning. My tests aren't getting darker, I haven't had many symptoms besides fatigue dizziness cramps  & hungry a lot, oh & I pee more. That's it. No sore boobs no discoloration no morning sickness. I'm really scared this is chemical or early on set miscarriage.