Dr. Ray’s Answer
I received one F and two D's during my undergraduate career. Most of my other grades were A's and B's so they did not affect my total GPA that much. I received one of the D's in my first semester in college, partly because I was overwhelmed by how much more demanding college was compared to high school. Perhaps you are dealing with a similar issue. The next semester I made all A's and B's, and your grades will probably improve, although you will not be able to make a 4.0. Even if you retake these courses and make A's the F's remain on your record, so your average grade in each class would be a C. Obtaining a 3.5 may still be doable if you can figure out how to allocate your time and study more effectively. As Angelina mentioned I would definitely talk to the instructors in any classes your are currently struggling with. They can help you see if there is anything you can do differently to pass, of if you should drop the class.
I also want to mention that if F's were in courses in your major, somebody may be trying to tell you something, i.e. maybe this is not the best field for you. I started out as a physics major but eventually switched to psychology, partly because my first D was in an introductory physics course (it also turned out I didn't like the subject).
Mostly I want to reassure you that many incoming students have the same problem and most of them are able to go on to a happy and productive college experience. Albert Einstein failed the entrance exam at the University of Zurich in mathematics the first time he took it. He was admitted on the second try and went on to become one of the greatest scientists in history! Not bad company! I wish you the best in pursuing your goals.
Ray Finn, Ph.D.