I'm scared to take the meds I was prescribed

The doctor recommended me 15mg of Opamox on necessary situations, no regular schedule but limits to how much each week.

I haven't experienced actual panic attacks and I'm not suicidal, I just get ruminating thoughts which start spiraling and lead me to crying heavily. Crisis, worry, stress about college which I am passing somehow, but the timelines. And my family member who has a terminal illness they have to live the rest of their life with. Talking about it gets me into that spiral and that's what the doctor saw when I was there.

But after going through all those thoughts and crying I'm fine, so I feel like I shouldn't rely on meds with such small inconveniences. This is my first time with them so I'm afraid of the possible side effects and that I could get addicted.

Writing this had me weeping as well.