i’m scared

hi so i’m on the combination birth control pill and i always take it the exact same time and i never miss a pill. i had sex on july 4 and he came in me and i’ve taken 4 pregnancy tests that have all came up negative, the most recent one being today and the first one being a week after i had sex. they’ve all been clearblue that tell you up to five days sooner. i’m going to puerto rico on saturday and i’m having severe anxiety (i have been diagnosed with anxiety) that i am pregnant even though i have none of the symptoms, because i am supposed to get my period on sunday when i’m there. i’m just looking for reassurance here because i’m a very naturally anxious person. i also went on the clearblue website and it told me based on when my period was and the length of my cycle when to take a test and that was today. please reassure a sister because i’m really anxious. thank you ladies :)