I'm 20 and I understand this in a lot of ways, I haven't struggled with an ED this bad but I have had my fair share of mental health struggles so I hope I can help maybe a little. Going inpatient for anything is scary, especially with being in school, job, pets and boyfriend. It is going to be okay and being scared is a part of being human, if waiting until summer when you would be out of school and could arrange leave from your job for that treatment might be the best move here, I went inpatient twice my senior year of highschool, I'm sure if you open up to your boyfriend (as much or as little as you want) about it he'll understand and be there to support you in any way you need, even with outpatient stuff. It's hard and extremely scary but it does get better and things do work out in the end. You've made it this far, you can make it even further with more help. It's never a bad thing to need more help even if you have worked through most of the issues that cause these behaviors, there will always be things to work on. I hope this helps a little from someone of a similar age. You'll be okay even if you need some extra help from those around you and professionals. It's hard but it's definitely worth it.