KR:
Hello! You sound like I did 5 years ago.
I was overwhelmed, had just lost a baby at 20 weeks gestation and had went back to work.
Part is post-pardum depression (you might not "feel" depressed) and just being overwhelmed.
Here's what my husband and I did.
1. We hired a cleaning service to come in and clean the house.
2. We set a "date night" for the two of us - rain, shine, sleet or snow - we MADE time for each other. When times were tough financially, we waited until the kids went to bed (even put them to bed early) and set a blanket up in our living room, started a fire, put on a mellow radio station and talked - about anything and everything but set rules for NOT blaming each other for not doing something - it wasn't about fighting or pointing fingers - it was time for us to be us - we talked about work, kids and plans.
3. He, being a wonderful husband, set up a "Boys night in" - which means that mommy can join IF she wants to, but other than that - it's the night that mommy takes off - doesn't cook dinner, doesn't have to be at home and has time for herself.
4. We also made a "daddy's night" and he plays cards with friends.
Go to your doctor and have your hormone levels tested. Lack of intimacy or sex drive can be hormonal as well as physical (being overwhelmed and depressed can do it).
Let your husband know how you feel and what you need. Let him know and understand that if he picks up some of the slack, there may be more romance in the bedroom because you have the energy to do it. It's not fun feeling like you are the only one doing the housework and working and taking care of the kids.
Find out what your husband is expecting - know how he was raised (my husband was raised in a SAHM environment and WANTED the same for our kids) as this can cloud or even set their expectations in marriage. If you don't know what he is expecting and "dreaming" of - then how can you know why he seems to have a problem getting stuff done. A 7 Month old can be a handful as we all know. Some men do NOT know how to multi-task and be able to get stuff done and take care of a child. I know, I know, seems funky - but it's true. This is where "cavemen" mentality comes out - really.
It's not about fighting what needs to be done. It's about understanding where the other one is coming from. After I understood that my husband was VERY hurt that I went back to work (after being a SAHM for 2 years) he felt that I didn't trust him to take care of us and the family or that I just didn't feel that he was properly providing for the family - he was raised where his dad worked full time and long days and mom did it all with the kids (den mother, girl scout leader, room parent, cooking, cleaning, grocery shopping, etc.) and his dad really didn't have to do much other than take care of the outside of the house or "fix" things.
I too was raised in a SAHM enviroment. My dad was a Navy sailor and gone a lot. My mom did it all - fixed stuff, all of it. She didn't work until I was in middle school and even then she was driving the school bus.
Our perceptions of marriage and home were same in many ways but not when it came to my working. It wasn't about him not being able to provide, it was my need for adult conversations and feeling of self-worth (yes, kids are wonderful and a true blessing) but even mom's sometimes need something more.
Any way - I know this is long and drawn out - however, I hope you see that sometimes it's not about a man/husband being lazy - it's about perceptions and expectations. Even as simple as not knowing how to multi-task!
Keep us informed!
Take care - YOU ARE NOT ALONE!
God Bless!