 [ Symptoms ] what do i do if i have a horrible stomachache body aches nausea and weakness but have no fever [ Disease ] 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