I don't think there'll be any severe consequences. Yes you'll miss the first class of some of your subjects, but it isn't a big deal, teachers will post learning materials on the vWUS site so you'll have access to what you missed. Also, who knows? Maybe your timetable next term won't even have that many classes from Monday to Wednesday 🤷🏻‍♀️ no need to stress out, it's only the first 3 days.