Starting college

So for most people everyone's starting school again. I'm starting college, which means a new area and people. Monday has been my first day and I don't know if I'm going to be able to handle it already. Not even much has happend, but I feel 'dread' creeping up on me, and it hasn't even been a full week. This is making me start to doubt my abilities, the jump from HS to College is panicking me, and I feel like I never get closure from whatever the teachers ask of us. This is causing me to overthink and overstress for what I'm supposed to do, nothing is ever clear enough and debilitatingly confusing. Not to mention ive picked courses that i know I want to do, but im starting to doubt that im intelligent enough to do them. Plus, I have to take maths again.

 I'm confident that I'm not doing anything right so far. I really don't know if I'm up to handling this, and I was very excited previously, but now I instead feel pangs of anxiousness? I genuinely don't know how to fix this - my day wasn't horrible for the most part, but I've always felt this way around school and such. it feels too much, and I've barely even been there. I just want to stay home