Depends on which preggy, lol.
For my 1st baby, I started way way early. The moment I confirmed my preggy, I started shopping. By 2nd trimester, I wld have collected my hand me downs and sorted thru. This is after my morning sickness was better. Clothes were washed by the beginning of the 3rd trimester.
For my 2nd preggy, I left it really really late. Only started to move in my last 2nd month of preggy and managed to complete everything just in time for delivery.
Hubby was joking that if we ever have a 3rd child, he might be the one doing everything while I recuperate in hospital after the birth.