Period-like cramps before + preg test

Mommy • Trying to conceive baby #3
Hey y'all! I'm 12dpo and tested negative today. I've been having cramps all through my 2ww. Today I feel like my period is close to starting due to cramps and bloating. Has anyone felt their normal period symptoms and actually turned out to be pregnant? What about testing negative at 12dpo and actually tested positve after? Advice would be appreciated! :)