Feeling "stuck"

This is mainly me venting and trying to get my thoughts out but any advice or insight would be nice cause I'm pretty miserable right now.

I came back from a trip about a week ago and had a complete breakdown. I wasn't at 100% before the trip in terms of anxiety and my overall mental health but I think just coming back home from the trip made me realize how unhappy I am.

Ive never had issues with anxiety before but now my mood and nerves have been all over the place so I started therapy and decided to take some time to kinda self-reflect and see why I'm feeling this way.

I think I'm kind of feeling "stuck" in life right now. I was in school for nursing and graduated and started working and it's kind of like what's next? I've never had a serious relationship. I'm living with my sister and her family and feel overwhelmed there. And there's been alot of repressed strain and emotions and grief that I think are slowly coming out that i never let myself fully experience.