Odd symptom help

Kayla
I miscarried 2 months ago but now I'm 3 days late with barely a hint of cramping occasionally (very out of norm for me), very sensitive to smells, what felt like a yeast infection but yet no odd discharge, and randomly nauseous like I was before but tested and got a BFN. Any thoughts for causes or am I just needing to retest in a few days?