Help question for people who have tested early

Taylor • Thu, Aug 03 • Mama of two and pregnant with #3 💗💗

So I took one test at 9dpo (frer) and another at 12 dpo (blue dye) I know they are different brands but neither one is significantly darker. Should it be getting darker or do I need not to worry? This would be my second child with my first I didn't know until 14 weeks (happy 3yo now) so I'm new to all of this.