Woke up this morning although we are trying to conceive I have no symptoms that AF is coming in two…

Woke up this morning although we are trying to conceive I have no symptoms that AF is coming in two days no cramping or anything normally I get it a week before I hope this is a sign of my BFP I do have lower back pain but that's from my car accident from a year ago and what's weird I feel flutters and I know I'm not that far along if we succeeded in getting pregnant