Took a test, first it was negative

Alina🍒 • Happily married. Baby boy was born 12/17/2015 and our little girl got here on 04/03/2020 ❤️
I threw it out and about 2 hours later I take it out and it's positive! Anyone had that happen to them? Can I trust that I am pregnant? 88 cent test from Walmart. 8 dpo