is actually problem of follicular maturity.It is due to hormones.
The readings of your follicular study
shows a slow growth of fllicles. It should reach 25 to 30 mm by 14th day, when it ruptures & free fluid is seen in the pouch below.
citrate is given in such cases ,which in turn induces follicular growth.
Please consult a Gynecologist for choosing best drug for you after examination & investigations