Hello,
I'm one of the student ambassadors here at coventry university.
First of all, the fact that you are able to reach out is incredible, and for that you should be proud. Secondly, one of the biggest ways to help calm nerves in my experience, is to remind yourself that what you are feeling is completely normal. You are not alone by a mile and there will be many people in your position right now and come the start of the year.
Starting university can be extremely nerve wrecking, not knowing what to expect, not having anyone you know around etc. But we all start off there and you find us humans are easy to adapt, and the university experience is what you make it.
You may find you'll be so busy in the first few weeks of university that you won't even have time to realise you're nervous, and once you are familiar you may find your nerves will lessen more and more whilst you are settling in.
I'd recommend joining some groups ahead of time, these are usually set up by people on the same course as you and will allow you to make some friends before hand, this helped me out a lot when I first started university!
I hope this helps,
Best of luck and have fun,
Courtney H