I'm going to presume that your son was born at a healthy birth weight and has no other health issues. As long as your son has sufficient wet/dirty diapers and is gaining weight at a steady pace, I would enjoy the much-needed rest! You sound like a loving and conscientious mom! I had some of the same questions with my first baby. My first daughter slept through the night at about 6 weeks old, but only for 4 nights. (That first night, we freaked out, worried that something was wrong. LOL). After that, she started waking up once per night or so for the next 4 or 5 weeks. Then, she slept through the night again for the most part, only waking up once a week or so.
It sounds like you're doing great. Keep up the good work, and enjoy whatever rest you can get!