I'm flabbergasted!!!

My little girl is barely a month old (born December 18, and actually was due January 10) but today I put her down for tummy time even though she was crying because I haven't really been doing tummy time much and SHE ROLLED OVER? she did it really fast the first time so I got out my phone to film her and put her back on her stomach and she did it again in less than 2 minutes. Google says babies roll from tummy to back as early as 3 months but??? Should I be freaking out here because I kinda am.