Hello and welcome to HCM
The white colored discharge from breasts is definitely not the reason for failure to conceive.
Whate discharge from breast occurs due to prolactinoma i.e. increased production of prolactin hormone.
prolactin is produced by an endocrine organ in the brain called pituitary gland
arising in this gland can cause increased production of prolactin and one of its symptoms is white discharge from nillples.
Your doctor has ruled out this possibility by getting various investigations done like serum prolactin levels and X-ray of the head.
Presence of a cyst
is not a alarming finding as cysts occur in normal healthy females.
Cysts do not interfere with conception until they are very large to hamper ovulation.
It is advicable to date your ovulation and try for pregnancy
Besides you can get serum hormone levels done - LH, FSH, estrogens and progestrerone.
Thanks and take care
Dr Shailja P Wahal