Preseed

Manda
How obvious is Preseed? I am anxious to get preg, ttc #2, and they will already be close to 3 yrs apart.. My hubby knows I'm off bc and he isn't taking any precautions but he is not as anxious to get preg as fast as me! 🙄 I don't want to trick him or anything but just want to up my odds! 😝 
Will he be able to tell I used it?