You can start collecting colostrum by hand expressing from around 36 to 37 weeks of pregnancy. It is recommended to use your hands only for expressing colostrum during pregnancy, not a breast pump. The collected colostrum can be stored for your baby to use after birth, especially if the baby is unable to breastfeed immediately. This practice helps build confidence with breastfeeding and provides a nutritional and protective reserve for your baby. If you experience painful contractions while expressing, you should stop and consult your midwife or maternity helpline. Also, if you have certain pregnancy risks like preterm delivery, low-lying placenta, or bleeding, you should discuss suitability with your healthcare provider before starting colostrum collection.