Could I be 5 weeks pregnant now?

i honestly think you are fine!!! STOP stressing that will only make you later (im very irregular) to due my constant high stress level. the symptoms you are feeling are very generic and can go with so many illnesses. i would call my physician and ask them if this is normal, and if not go back and test again! (however doctors' tests are very accurate). stop worrying, youll be okay:)