Tired

6 weeks and 3 days breast feeding, every single night feed has been done by me, maybe 6 or 7 nappies changed by daddy (my fiancé - who is working 5 days 9-5) and we have a 3.5 year old who is at nursery 3 days a week 3 hours a day, I don't drive so I walk there and back 9 times a week. I am knackered. DH doesn't even flinch when the baby wakes up at night for a feed, I know he works bla bla but an offer to help would be nice, maybe offer to change her nappy or get me a drink? (you all know it's thirsty work). I'm physically & mentally exhausted. if I need help during the night I have to punch him, he'd sleep through a world war. I need a night off, doing this all myself has drained me.