I dnt think coz i m in 37 week .. n the pain was continued... n I do hot water bag n it feel vry relaxing n u sleep vry well.... I asked my doc. she told me not really .. vt baby is gaining weight and little stress on back

Pre labor sign would be an intense lower back pain which comes and goes. If it is a constant dull pain then it's just the weight of the baby. Other pre labor signs to watch out for are the baby moving lower in the pelvis and multiple Braxton Hicks contractions.