You know this. You're a social worker. You know there's treatment. But just like doctors famously make the worst patients, social workers can make the worst clients. Let someone else illustrate that. For you, self-care.
How do you help clients with anxiety? Probably some combination of talking, problem-solving, CBT...and whatever special sauce you throw in. Why shouldn't all that work with you?
Pausing and taking the time to take care of yourself may be one of the most important steps along the way to getting your social work license. What you learn for the test may fade in memory. The way you work with your own anxiety is something you'll develop over your entire career.
You already know what to do. For test anxiety-specific guidance, try these sites (via SWTP's Study Tips page):