Hot trust me, with newborn exploding nappies (often known as a Poonami) there will already be shit in your washing machine 
Loads of local councils offer schemes to encourage reusable nappies - think I got £100 worth of nappies for £30 when I had DS.
Gaw please don't put yourself in that situation. Tell him over the phone, or take someone with you (not your boyfriend, maybe one of his parents if you don't have any relatives you would ask?) I was terrified telling my dad when I found out I was having DS, but there's no way I was physically afraid - just thought I'd be a disappointment. My dad utterly surprised me and was overjoyed at the news!