If it's all possible, you should tough it out. Part of learning in college is learn how to survive tough situation, tough classes, overcoming adversity, etc.
You need to reevaulate your attitude toward school and not bailing on the first sign of potential failure. You will never survive and succeed in real world if you take that attitude in life.
That's right. You can't just bail or give up with the first sign of possible failure. If you continue your life this way, it will be hard for you to succeed in anything in this world.