Ttc - My body playing god damn tricks on me!

My partner and I have been ttc for the last 6 months, my periods are 3 days late atm, I tested after being late 1 day as my periods have always been on time literally to the day and I get all the symptoms...when I tested it obviously came up not pregnant. Now I’m too scared to test again as it’s sooooooo disappointing 😢 Why is my body playing tricks on me should I use another test???? I used a clear blue 99% accurate blah! Blah! Blah!! This feeling is horrible. 😫