If you haven't, try asking him to help. Be specific. Tell him to do the dishes, put the laundry in the washing machine (I sort our laundry - I'm sure my husband can, but I also think I'm a bit picky). With our first baby, I spent a lot of time resenting my husband when he went out (rarely) or watched TV while I worked when the baby was sleeping. I realized that we really needed to talk about how our lives had changed. He needed some time left alone with the baby (and this was just one!) to see that I wasn't sitting at home doing nothing. Then he was more than willing to step up, and we were both happier. I hope it works for you like that, too. It's not all fun and sunshine, but hopefully you can find a place in the middle where you are both happy.
Also, I had my gallbladder out when my second was 10 weeks old (after a c-section). My husband totally didn't get that I needed taken care of. I wish now that I had said, "I'm really tired and I hurt. Please watch the kids so I can nap." I wasn't even on strong pain meds because I was nursing and didn't want to have to pump and dump for longer than surgery day!
Good luck. It's a hard time. You'll get through it:)