I think this is entirely normal, depending on your baby mine seem to go through spurts, on the 3rd week, 6th week, 9 week, and then 11 or 12th week and they breastfeed a lot. They usually empty about both breasts during a feeding and then even feed while they are sleeping. I exclusively breastfeed too and have been doing this now for about 9 years. Also I notice when they are sick or not feeling well they nurse more then too.
If you feel like you are breastfeeding just about everywhere it's what I consider normal. This won't last forever just in the beginning stages. But trust me it can be frustrating for your husband because the baby does not want to be away from its food source lol, so yes little time to take a shower, get dressed etc. but yes just rest assured it will not be like this all the time :) Keep us posted indeed!
Must be a growth spurt. Brady has done that too. He usually goes every 2 hours between feeds but there's clusters of days here and there when he only goes an hour or hour and a half between them.
I know what you mean about the second let down...I've found that's happened to me before too. And just because you feel empty doesn't mean you are. I've thought that too and there's still milk that comes out.