12dpo and 1 day until AF

Sabrina🌸 • 🤵👰7/25/15 👧🏼12/6/13 👼2/21/15 👦3/26/16 👧6/27/18 I`m 26 and have 3 beautiful babies! Due with #4 September 2020

So today I am now 12dpo. I think if I were pregnant it would definitely show now. I think I see something but then again it could be just because I want to see it. TMI before I took the test I did have a brown string of cm come out. But I've also had that with all of my pregnancies. Can someone tell me it's there or give me a tweak please. This is the last post for this cycle since she's supposed to come tomorrow.