The only person who can answer that is a doctor. Get tested by the doc.
You could wait for a few more days before testing again as u may not have enough pregnancy hormone for the tests to detect. If its still negative and your period hasnt started then see a doctor. Sometimes period and pregnancy symptoms are very similar and you may be going through period symptoms without a period. Hope that helps
Also I'm cramping and breast are sore but no bleedig. Period hasn't come...