Both of my daughters had this same issue from about 2 weeks old and with both it lasted for some time. We have an infant rocker that is slightly inclined and I let them sleep in that, which helped at night. Without it they just sounded so miserable and like they were having a hard time breathing. They slept in that, I used the bulb when it seemed necessary [but not overly so because it can irritate the sinuses and cause more stuffiness], and sometimes would go sit in the bathroom running a hot shower so the room would get hot and steamy...this seemed to help them too. When I asked the nurse with DD1 she said it is very normal, even if you're not taking them out and about, simply because their bodies are still developing immunity and getting used to life out here in the germy world. Eventually it just passes. As for the booger thing, DD2 gets these hug, man-sized boogers. She cant even sneeze them out because its like they get stuck in the top of her nose...so I have to aspirate them out. They always have a slight green tinge, but she isn't sick or having symptoms of anything so I have just let it be for now.