Help!

Vaneecia
So I'm ttc and it's about time to test again the only issue is I'm having a hard time deciding if I should test or not. Today is the first day of Aunt Flo visit and it's 13 dpo. I know I know sounds self explanatory my issue is if I am I'd only be about 3 weeks since the last time Aunt Flo came was the 30th of November. I feel like that would be too soon what do y'all think?