Why don't I have a period at all?

Hi,
Something’s terribly wrong with me and please help me.  I am 30 yrs old married woman.  When I reach 16 I went to a doctor because I didn’t have my period. The doctor gave me some contraceptive pill and then it worked and had a period for 4 days.    I took it continuously for three months and then stopped.  But as soon as I stopped taking the medicine then my period also stopped.  The thing is that I had consulted many gynaecologists   and have my period only if I took the medicine they prescribed which are of various kinds and nothing seems to work for me.
.  I can go on without having a period as long as I don’t take the medicine.  Nothing seems to be wrong with my physical build, I am 5.6 ft tall, healthy and didn’t have any symptom of menopause.  My breast is quite small and the doctor told me that the size of my uterus hi very small.  It is 5.3x 2.8x1.5 cm.  I stopped taking the medicine because it makes me fatter everyday.

Regarding sex, I also enjoy it though it takes a long time for me to get arouse.  I don’t think it will be possible for me to conceive at all even I like to have a child of my own.  Is there anyone like me?  Please help me and tell me what to do.

[n40066]

have you been an athelet or dancer all your life?  what is the history of your mother...her mother.  has your dr. ever offered an explanation as to why this is happening?  what tests have you had?

sorry so many questions, but more pieces to the puzzle are needed to offer an opinion!