I packed mine at 35 weeks, the week after I finished up at work.

I had bought a 6-pack of undies from target, washed them and put them in, along with my pads etc. Had the baby's bag packed & unpacked about 10 times! I'd also take in some enviro shopping bags, to take gifts home from hossy in - get your DH to take them home gradually!

I was that paranoid, I used to have my bag packed and next to my phone charger, with the phone on charge tied around it!