Write down what your complex involves - be honest with yourself! - then get a good friend that has known you for a while to read the list and give you an honest answer, only then will you know where...
The phrase 'inferiority complex' means a sense of personal inferiority arising from conflict between the desire to be noticed and the fear of being humiliated
I had an inferiority complex after everyone called me stupid every day. Simply, and inferiority complex means extremely low self esteem. So, you would use it in a sentence about very low self esteem.