RE appointment

Y’all I am so nervous! I have my appointment to see the RE on Monday! So I have PCOS but my cycles have been regular the last 9 months. This month I am currently 3 days late and took a test and it was negative. I was hoping to be pregnant at my appointment but it doesn’t look that way! I’m worried something may be wrong since this month I haven’t had my period and got a negative test(I did use the dollar store one). So I need some encouragement and I want to know if anyone thinks I should test again in a few days?