Help I'm worried

Brandi • Mommy to the sweetest Everett Mae 🎀
So I'm supposed to be 5w6d and my clear blue is only showing 2-3 weeks pregnant. I get that it's from when you ovulated.... But I feel like I should be 3+ by now. Or do you think I ovulated a little later? 
I don't have that many symptoms, I'm tired and my boobs are mildly sore. But other than that nothing. Any advice or anyone experience the same thing. My appointment isn't until the 28th and I've had a miscarriage before. Should I call and try to get an earlier appointment for blood work?