If you are suffering from anxiety, you might be affected by one of the following well-known forms of anxiety disorders
Generalised anxiety disorder (GAD)
Post-Traumatic Stress Disorder (PTSD)
Obsessive-Compulsive Disorder (OCD)
Body image problems
What is in common between all these forms of suffering is that there is a deep sense that "something is not right and something is wrong with me". You might worry a lot about the future, think about the worst-case scenario all the time, have intrusive thoughts and feel pressure to perform certain behaviour or to avoid certain things.
Here are some article I have written on anxiety