Others have experienced the same feelings that you now experience, and they have survived. Your International Student Advisor, many of your professors, and some fellow students have experienced the same things you feel now. Don't be afraid to discuss your feelings with others. Keep a sense of humor. The differences between your culture and the American culture can be funny.
Laughter does much to take the edge off of culture shock.
Humor also takes the sting out of feeling offended or hurt by different customs. Evaluate your own expectations. Be flexible and keep an open mind. Be flexible and you will find that adjustment is easy. Don't think of the adjustment as a problem.