The primary symptom of infertility is difficulty getting pregnant. Various causes of infertility may result in additional symptoms.
Any of the following problems may cause infertility:
Infrequent ovulation. When your periods occur more than a month, or sometimes are absent, you have infrequent ovulation.
Common causes of infrequent ovulation include:
Body stresses such as:
Unusually ambitious exercise training
Rapid weight loss
Low body weight
Some hormonal abnormalities such as:
Polycystic ovary syndrome
Hormonal abnormalities can delay or prevent the ovaries from releasing an egg. Symptoms that suggest a hormone abnormality include:
Unexpected weight loss or gain
Excessive hair growth or hair loss
Ovarian cysts. Cysts in the ovary can cause pelvic pain. They also can interfere with the normal process of ovulation.
Scarring in the fallopian tubes. This can prevent pregnancy by stopping the egg from traveling into the uterus.
Damage can result from:
A previous surgery
A previous ectopic (tubal) pregnancy
Pelvic inflammatory disease (PID). PID is a bacterial infection in the pelvis. It often scars, damages or blocks the fallopian tubes.
Abnormalities in the shape or lining of the uterus.
Fibroid tumors or uterine polyps sometimes result in:
Heavy menstrual bleeding
Enlargement of the uterus
Scar tissue can develop within the uterus as a complication of:
Surgical procedures such as a dilation and curettage (D&C)
Such scar tissue can lead to infrequent periods or minimal menstrual flow.