Hi Emma, welcome 
Early sobriety is all about: don’t pick up, don’t use. It’s also about opening your eyes and learning what you need, to be healthy and present for yourself; to have a good relationship with yourself.
There’s a pretty simple rule I have when I’m having rough days: you are allowed to do anything that’s safe and legal, to stay sober.
Stay home all day and watch Netflix? Ok.
Eat pizza three days in a row? Absolutely.
Go for walks for hours, listening to angry music? (or whatever music suits your mood) Yes!
Etc etc.
Do you have a meeting you can attend? We all need help and we need to not feel alone. Meetings do two things: they give us a community of people who understand, and they help us learn to be healthy and present for ourselves. (It’s weird but in our addiction we forgot that or never learned it. It’s kind of like learning to walk, or to swim. We need to learn to be present with ourselves.)
There’s a good list of resources (including meetings) here. Check it out!
Welcome Emma! Remember: you’re a good person and you deserve a safe, sober life where you can be your full self.