It’s OK to leave.
It’s OK to not “stick it out.”
It’s OK to need to take a break.
It’s OK to want to take a semester off and regroup so you can feel better.
I suffered from anxiety and depression throughout college and graduate school, and still battle it (in milder forms and with better coping mechanisms) as a working adult. I still see a therapist. Three weeks feels like an eternity. “Just getting out of bed and getting through it” can be a physical or psychological impossibility. I remember being wrapped under the covers in my bed unable to stop staring at a single point in the wall, much less move; and going days without eating much or sleeping or doing much else besides just lying there. It’s so, so difficult to explain to people how completely awful and immobilizing it is if they haven’t experienced it themselves.
You do not have to finish this semester. First of all, there’s a such thing as a medical withdrawal; it’s possible for a student facing health challenges to withdraw without damaging their GPA. You can also take incompletes and make up the work later. Second of all, even if you go to class, you’re not really there; you can’t concentrate, and any work that you do may not be high quality anyway. I tried to stick it out in a class after medically withdrawing from two others and I failed it because I wasn’t mentally ready to do the work in it. I wish I had dropped it and tried again later.
But most importantly, your mental health is way more important than your GPA. Nothing is as important as you. You can recover from a tanked GPA if you have to - people do it all the time. (I did!)
The one thing you need to focus on actually motivating yourself to do is going to the counseling center. That’s it. Start there. Go to the counseling center and ask for help. If you can’t make it out of bed or your dorm room to go to the counseling center, call your RA on the duty phone number. Tell them what you’ve told us. They will know what to do.