Unfortunately, it's that time of year when there are all kinds of crappy things going around.
Most things aren't serious, and your doctor, husband and brother have all confirmed that. Your brother is better, and your husband has had it as long as you, and is hanging in there, right? You're improving, even though it's slow?
Sometimes it's more annoying to have a virus, because a bacterial infection can be easily cured with antibiotics whereas a virus just has to run it's course.
I haven't had it, but I live in the south, which until the past couple of days, has been pretty warm. Lots of people here are sick though.
Are you resting when you can? Not smoking? Drinking lots of fluids? Washing your hands a lot so you don't pick up anything else?
Hang in there, and I hope you feel better soon!
Lymph nodes are a good thing. :>) They scare people but they mean your body's immune system is working. You obviously have things you are fighting off. And you could have back to back viruses as it is that time of year as mentioned. Coughs in particular also can take a long time to fully go away because if our airways get irritated, that lingers a bit which then causes us to cough. Coughs can last 2 months after we've been ill simply due to this irritated airway issue. Anyway, it's been a couple of weeks. How are you now? Better?