The first step should be talking with someone. It could be that school is the trigger for it. As a longtime university student and lecturer I saw a lot of this sort of thing. College can be a time of great personal and intellectual growth as well as a source of great anxiety, uncertainty and instability.

That isn't meant to minimize what you are feeling or implying that your issues are minor. If you ask 'should I get help', the answer is almost always 'yes'.

Most universities will have free counseling of one sort or another. It might be though the psych department or through an office in student affairs or whatever your school calls it. That might be a good first step.

After talking with them, if they recommend seeing a psychiatrist, see one, or just go straight to a professional if you think your issues are getting serious.