hubby says he sees a faint line... 31 CD, TTC w/Clomid #rainbowbaby

Erika Lyn • TTC, PSCO, MC 2015/2017/2019 Bio Son: 1/3/10 Adopted x2 Daughters 11/4/20 Adopting Son 6/10/2021 Pregnant DUE Date: 11/11/21
Four days late and my husband says he sees a faint line, haven't had any implantantion bleeding. 
Looking to test again tomorrow morning. (Will use pink dye test ) #rainbowbaby
TTC w/Clomid 50mg third month 
Thoughts??