Help! Any advice is appreciated!

Brittany • Married 10/10/15• Had our baby boy 10/17/16💙

So for starters AF is a week late as of today & usually it’s ALWAYS on time 🙄. So three days ago I took a test (fmu) and it was negative. So since there still was so sign of AF I took another test (digital) the next day (fmu) and it was positive. I took another one (digital as well) the same day with the same result. Well today I took a dye test just to make sure (had a chemical pregnancy 3 months ago) and it came back negative. It seems like all of the dye tests I take still say negative but the digital say positive 🤷🏻‍♀️🤦🏻‍♀️. But I have constant nausea & feeling cramps/ bloated. Any advice??