Rainbow?

Lisa • Married. Girl Mama X 3 Stillborn Son; Silvanus - February 14, 2016. Molar Pregnancy; D&C September 5, 2020, another D&C November 23rd- Cesare 👼🏻 MTHFR +
My husband and I had our son, Silvanus, stillbirth at 20.5 weeks gestation on Valentine's Day ( 4 weeks 3 days ago) I haven't been bleeding and yesterday I had very small amount of old blood. I took a hpt and it came up positive I used clearblue digital. I see my OB in almost 2 weeks for a follow-up. Can this really be our rainbow baby?