Test progression?

Marissa • 27 years old, married since July 2, 2013. Beautiful daughter born 02/11/15 ❤ Handsome son 12/09/18 🌈
Okay so I have a pack of like 20 Wondfos and I've been testing every morning just to see the profession. It's only been two days since my BFP at 11 DPO. I'm just worried that they aren't getting darker faster! Do these look okay to you guys or should I be worried? I've never had a positive test before in my life, so I'm not 100% sure how quick the lines should darken.