I started packing mine about week 37, so pretty late on. When I went into labour, I had a couple of hours to finish it off. I found track pants and t-shirts a must. I took some hoodies in and didn't end up needing them as the temp in the hospital ward was pretty warm. Make sure you have plenty maternity pads and I found toilet wipes really good if you have stitches, a lot softer than toilet paper!