At the beginning of your third trimester of pregnancy, your breasts begin to recruit all the necessary «equipment» needed to breastfeed. (lactationlink.com)
Pregnancy pelvic pain is also common towards the end of the third trimester for the same reasons. (pregnancy-info.net)
Most of the parents decide to buy a crib mattress before the baby comes, just before the start of the third trimester. (thankyourbaby.com)