It is difficult to know what may be wrong. What you might be describing are symptoms of anxiety or of panic attacks. Unfortunately, I do not have enough details to make that determination. I would recommend being evaluated by a therapist. He or she can gather much more information about your situation.
When dealing with anxiety, it is important to be as logical and as rational as possible. The key to curing anxiety is to force yourself to believe in reality at all times. Often, anxiety symptoms stem from an inability to see reality clearly. Individuals with anxiety have lost the capacity to do this effectively. This is a situation in which a therapist could be helpful. A therapist is an objective third party who is also trained to deal with anxiety and other related mental health problems. Anxiety medication or antidepressant medication may also provide you relief. The “find help” tab at the top of this page can help you locate a therapist in your community. I wish you the best of luck. Please take care.