my period is late by 2 days (3 more days to go and it will be a missed period)

Haleah

i took a test and it came back negative. During the time that you’re missing your period, is that the time that it’s implanting or what? idk 🤷🏻‍♀️ can someone tell me what’s up? cause it’s only been 1 week & this sunday makes 2 (if pregnant)