control line lighter? why

Tayla🌼 • Two daughters 🌸🌸 13month Gap. 👶🏼 👶🏼 👼 healing from loss 😭 at 11 weeks pregnant. NOW -🌈 👶🏼 on board
Iv just peed on a stick. I'm already pregnant and have known for about 2 weeks and my doctors already confirmed it. I'm 5w 4d now. I'm just wondering why when I just did this is the control line lighter ? I'm on honeymoon and won't see my doctor now until I'm 9 weeks just curious?