It is important to consult with your healthcare provider for an accurate assessment of your specific situation. In general, a low lying gestational sac and faint fetal pole at 5 weeks can be concerning, but it does not necessarily indicate an abnormal pregnancy outcome. Spotting can occur for various reasons during early pregnancy. Bed rest may be recommended in certain cases, but it is best to follow your doctor's advice. Regular monitoring through ultrasound scans will provide more information about the development of the pregnancy.