A healthcare provider will diagnose you with infertility issues if you’ve been unable to get pregnant within six months to a year (depending on your age). An inability to get pregnant after having regular, unprotected sex is the biggest sign of infertility. In many cases, it’s the only sign of infertility. However, other symptoms that may crop up include: • Abdominal pain. • Irregular periods or absent periods. • Irregular vaginal bleeding. • Pelvic pain. • Sexual dysfunction.