me and my wife have been trying to have a child for two years?
as it is already 4 weeks that your wife is late in her periods then by now her pregnancy test would have been positive. many a times delayed periods can be due to hormonal imbalances and not pregnancy. so my suggestion is to consult a gynaecologist and get evaluated and a blood test can be first conducted to rule out pregnancy as it is highly sensitive test. also by now fetal pole can be seen in sonography therefore a transvaginal sonography can also be done for further confirmation. hope this information helps. regards.