2 weeks late and (-) this morning

Kristin • 27 married army 2 girls ( 3 & 8 ) expecting our 3rd and final princess. recent miscarriage (04/24) we found out our rainbow is due 02/13/18 :)
Woke up real nauseas and sensitive to smell so my honey got us a hcg test and sadly it showed (-). He swears faint line but I didn't see it. Should I retest today or possibly tomorrow morning. Second time TTC the first time happened like wild fire and we weren't honestly TTC at that time.