I can't get myself to cum no matter what

This is going seem like a WTF question, but it is not as stupid as you may think, can you tell me better what you mean?  Or more precisely what your expectation is compared to what is happening?  I have seen many questions like yours where what they actually meant was female ejaculation.  In many cases the women described the typical signs of an orgasm, but they expected a certain mount of liquid in a particular range of thickness.  It was not realized they were not entirely the same thing.  Related, but definitely not the same. 

They shouldn't be embarrassed, terms change.  What things were meant when some said a woman was cumming then (like when I was your age) does not mean it will necessarily be called that now.   Because of these differences in terms, I need to truly understand what problem really is, stripping away expectations.  For me to understand enough to help, I have to be able to look at the situation in terms that I understand.  It may be perfectly obvious to others in your age group, but not in mine.  Terms change.

I realize I am doing a crappy job explaining why I am asking you to clarify.  I hope it is a enough at least for you to understand what I am trying to do.  So if you are willing, can you tell me more specifically what your expectations are, what is actually happening, and what is not happening that should be?