I think I might be Bipolar but I come from a family who doesn’t believe in mental illness

Hi, I’m 22F and I’ve always dealt with anxiety and depression and was diagnosed with it when I was 16 years old. I went to a therapist once but after that my parents said it’s a waste of time and money and I shouldn’t go.
Around August last year I got into a relationship and things were going pretty well but ofc there were times when fights and arguments happened and I feel I’ve been a b*tch to my partner and hurt their feelings. Over these last couple months I’ve realised how I get v emotional about certain things and become very upset or sad about others. I have been s*icidal for a long time and I found myself going back to that thought.
I did online bipolar disorder test and ik it’s not something I should rely on 100% but the test shows I’m v close to being bipolar.
Even one tiny thing can put me off and it’s v frustrating, I want to get diagnosed so I have answers to this, but I’m a student and broke and can’t go alone for the test and my parents won’t let me.
What do I do?