My mother is making me travel with her and my little brother for 3 weeks?

So my mom called me about two hours ago telling me that she bought 3 plane tickets for me, her, and my little brother to go see family for 3 weeks out of the country next month. Originally, she was supposed to travel by herself and I watch my little brother for two weeks and suddenly the plans changed. The issue here is that, I don’t really wanna travel just yet. I mean that on a mental health level (I have BPD - Borderline Personality Disorder) and have been struggling with it way worse now for the past 3 months. I’m currently in school and will soon be over with classes to start summer break. Am I wrong for not wanting to go with my family?
Updates
+1 y
note: i’m 22 years old.
My mother is making me travel with her and my little brother for 3 weeks?
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