When is a good time to start packing your hospital bag? And what should I put in it?

I packed mine at 37 weeks.

I packed mine by 35 weeks. I packed 2 changes of clothes for me, comfy pj's, socks, slippers, camera, chargers, chapstick, earplugs, change for vending machines, snacks, toiletries. Change of clothes for husband. And for baby 3 outfits, receiving blankets, hat, pacifier, blanket. I think that was it. The hospital provided everything else I needed.

when me and my boyfriend we've to a prenatal class this came in our folder, I hope it helps you out a little.