It's so hard to leave your baby, especially at only 7 weeks old, and then to have issues at work, too? That would be so hard. I agree with the other moms that ask if you absolutely have to work to get by. My husband and I both worked full time until I had my daughter, and now I just work part time, a few days a month. This works out well for us because we never have to pay for daycare. One of us is always home to take care of our daughter. I don't have the worry or expense of daycare, and I get to spend a lot of quality time with her watching her grow up. She changes so fast, and even though I see her every day, I feel like she is changing right before my eyes. It was a huge change for me to go to part time, but I love it and wouldn't change it for anything. I never thought I would like being a (mostly) stay at home mom, but I love it. We also weren't sure how it would work out financially, because we never seemed to have a lot extra at the end of the month, but we just watch what we spend, cut a little here or there, and it's worked out just fine. You can never get back these days when your children are young, and you can always work. In fact, you can go back to work full time when your kids are in school if that is what you want to do. If your current job doesn't allow you to work full time, maybe you could work somewhere else part time to allow you to be home with your son more.
Remember, raising your kids is the most important job you will ever have. It's the one job that no one else but you can do. Any other job out there can wait a few years. Trust me, when your son turns one, and you look back and wonder how that year could have possibly gone so quickly, you won't regret it.
If you are worried that you will be bored or feel like you need more interaction with adults, you could always volunteer, get together with friends or other moms on a regular basis, go to the park, go for walks with a friend, get in a Bible study or other group that meets regularly, do play dates, get a hobby (scrapbooking his pictures, crafts, sewing, photography, beadwork), organize your house, actually cook that meal you've been wanting to do forever, or a number of other things to keep yourself busy. I admit that sometimes I go to the mall or the park just to get out of the house, but I don't mind, because I'm getting something done in the process (errands, walking the dog).
Just think about what is really the most important to you, and then find a way to make it happen. It sounds like you have a very supportive husband, which is wonderful. Best wishes.