Hi, I don't really know what I'm doing but I thought maybe posting here would help the never ending googling I do. I've had recurring chest infections for over a month now, with heart palpitations and endless fatigue. I ended up in A&E with chest pain and they found a shadow on my lung that they've assumed was infection. They wanted to do another xray in six weeks but since then I have had two courses of different antibiotics and I'm still so wheezy and fatigued and I'm so scared that they're missing something and I'm going to have lung cancer and it's going to be late when they catch it. 

I'm 31 so the doctor keeps saying that while it's possible, it's unlikely because I'm young. And I guess I don't know how else to ask for more than just endless antibiotics that aren't helping? Or to advocate for myself or what to advocate for? I'm tired of being so poorly and I'm terrified it's something more serious.