does anyone else get sunday night dread that starts at like 4pm

it's not even about anything specific. work is fine, my manager is fine. but every sunday around 4 the stomach thing starts and by 9 i'm lying in bed rehearsing monday standup in my head. i've tried the "plan your monday on friday" advice and honestly it helped for like two weeks. now i just plan monday and THEN feel dread about the plan lol. is this just what having a job feels like or is this the anxiety thing my friend keeps telling me to get checked. genuinely asking, not being dramatic.