Not sure what to think!!??

Whitney

So the <a href="https://play.google.com/store/apps/details?id=com.glow.android">glow app</a> said u was to start af Friday but I started Thursday. My usual cycle is 6-7 days usually light heavy medium and the light again from start to finish. Well af lasted from Thursday to Saturday and it was a light medium flow all 3days and then nothing. Should I test? Could I be pregnant? Or just going crazy and it was just a off cycle?

Y