Am I Psyching myself or could I be pregnant???

It's been 1 week since I feel little thuds in my lower abdomen! I am barely going to enter my "fertile window" however I have been feeling very weird even when my period came last month. I was asked if I am pregnant they said I was "glowing" and this person continues to believe I am pregnant. I am not concerned so much about being pregnant but of being and not knowing. I have a heavy lifting job every once in a while I help people get up on their feet. Ahhh I just feel like I'm panicking! :/