Can 2cm ovarian cysts caused blocked fallopian tube?

Ovarian cyst ?'s: A "2 cm ovarian cyst" may cause occasional pain, especially if the cyst ruptures, but generally these have little or nothing to do with "blocked tubes". Ask your gyn physician about a hysterosalpingogram (HSG) which is an x-ray showing the passage of sterile fluid into your uterine cavity and out through the tubes. This is the statistically most common reason for infertility.