Birth control

As I'm nearing my last few weeks of pregnancy the thought of what I'm going to do after birth has crossed my mind. My husband and I are truly content with just our one baby due in 3 weeks and don't plan on having another for at least 2-4 years however; I need some BC suggestions. He's going to be home til March and deploys for 9 months after that so that gives us 3 months generally a chance to concieve again and it only took us 1 month to concieve after he got home from last deployment so in the fear of being highly fertile after birth I would appreciate some suggestions on BC and pros and cons of which you suggest. I have used depo for 6 years prior to concieving but I would like to explore other options for this go around. TIA!