Hii I've been experiencing slightly the same things, except I am bleeding from my back and I struggle to breathe so much! My nurse I see sends me to the dame blood tests too, I've called her so much to talk about xrays on my lungs and abdominal area and she's very rude! She diagnosed me with anxiety when. I went to see her telling her I couldn't breathe, when actually I had a bad flu.... at the end of the day it's our life but being a 'go' 'nurse' or 'doctor' is just a good paying job to some people and some people don't have to do they're jobs properly just like in every area of trade... I'm so sorry you have had to go through this too! I know too many people who are upset with what they receive in return you should've definitely had ur head checked properly, I honestly start to think they just want people to drop.... im calling my doctor again Monday to complain about the dame thing I have for a year now.. after four chest infections this year, lots of flu and no checks!! You know deep down when ur body isn't right and don't let a doctor who doesn't want to do they're job make you question your self - awareness ... good luck 

I agree! I hope you find a solution for your worries it really is draining when they don't listen. 100% right about the feeling something is wrong in our bodies, we have to live in them :( all the best xx