i hate anxiety...

so i been getting alittle anxious and anxiety lately because i started this new job last week. well i was supposed to go in on Saturday and sunday but i didn’t know because i was abit confused because my coworker told me he switches schedules On saturday’s . and plus i didnt feel good last weekend. Well i go to work wednesday so tomorrow i’m nervous if he’s going to get me introuble or fire me.. i really need this job because i have bills to pay and a baby ... What should i tell him tomorrow? That i forgot ?? or Didn’t know i was suppose to go in only wednesday , thursday and friday? 😭😭😭😭 i have a feeling i’m tired but he hasn’t callled me yet so. and on monday i was supposed to get my little check already.. i’m confused man