Just curious, why do your lungs fill up with fluids from high blood pressure?
In my case, it's due to the left ventricle of my heart being unable to "keep up" (the left ventricle is my "failed" component of CHF), so fluid backs up into my lungs. See:
pulmonary edema
I've never been overweight, but I rapidly gained 40+ pounds just before I was diagnosed with CHF, all from excess fluids. I had so much fluid in my lungs I felt like I was drowning. Once I was prescribed the "water pills" I spent my of my time peeing, for several days...
This is what I fear most, which is why I definitely want to take care of it now. But I also feel like crap on an almost daily basis because of it already.
I really didn't notice "feeling like crap" until I turned 50. Then, suddenly I would get winded quickly. I was taking brisk walks or 3-4 miles daily, and suddenly it was becoming harder and harder to do. I could easily lift, say 100 lbs., but couldn't sustain the lift, etc.
My doctors all said this was normal, something I should expect at about that age. I should have gone shopping for other doctors much earlier. I actually think part of my problem was that I looked too healthy. I wasn't overweight, was getting regular exercise, etc. And, I had "social anxiety disorder" related problems when I was young, so some doctors felt that my elevated BP was somehow connected to that and at that point, they'd stop looking for physical causes of my high BP.
Even now, when I go to a doctor (on a non-heart related problem) they sometimes ask "You seem too young for CHF -- where did you get the idea that you have CHF?", and I have to "prove" my condition to them.
You're much younger, so some doctors might dismiss thoughts of heart problems. I'd recommend shopping around for a specialist. There are some tests, some of which aren't all that expensive, that can be performed. I have a friend that has "anxiety problems" which would elevate his BP a good bit, and he finally found a doctor that could help him deal with his fear that he was having a heart attack, via counseling and medication. So I guess my point is whatever the cause, seek out a specialist that you feel comfortable with and can trust, etc.