Ooh betul, soalan bagus! Honestly I haven't done it at 37 weeks but a few of my mum friends who took their booster closer to delivery said they felt okay je, sikit je side effects, paracetamol helped la. Best thing is to check with your doctor or midwife first because they know your full health picture and can advise what's safest untuk you at 37 weeks; some might prefer you wait until after delivery, some say it's fine, depends la on timing and your circumstances. Good luck with the delivery, you're almost there!