Ay, congrats on being so close na sa due date! Spotting at 38 weeks can be normal, maraming mums I know experienced it tapos nothing serious, but honestly kailangan mo talaga ipatingin sa OB mo agad para ma-check nila kung anong cause at hindi ka mag-alala, kaya go na to your doctor ha, lalo na first time mo, peace of mind lang talaga. Better safe than sorry, lalo na ganitong late in pregnancy!