Is it possible to be pregnant, 3 weeks late and a negative test

Brittany • Married 💑one baby in heaven👼🏼2 dogs🐶🐕country girl with a country boy♥️
I'm almost a moth late for my period, last week I took a test and it said negative. Could I just be skipping a period? I'm always normal 28day cycle. I had a miscarriage in September and my period came back in 6 weeks like my Dr. told me it would. Any suggestions? 
Has anyone gotten a positive test after 3 weeks of a late period?

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