Who to ask, and what to expect

Start with your institution. Almost every university and college has a student support or wellbeing service, and using it is not a mark on your record. They also handle the things this course deliberately does not touch, which are extensions, mitigating circumstances, and what you may or may not have to disclose. That is their expertise and it is not ours.

Outside that, your doctor can refer you, or you can look for a therapist who names anxiety rather than talking therapy in general.

The first appointment is somebody asking what has been happening and for how long. It is about an hour and most of it is you talking. If your faith matters to how you want this handled, say so at the start.