Hi everyone . I feel like I'm completely losing my mind. I am 34 with no previous health issues. For the past 4 months (since having my daughter) I have not felt quite right and it seems to be one thing after another. 

I had constant headaches and dizziness for 8 weeks.  I had a MRI scan which came back clear.  

I have had constant neck pain, weakness in my right arm (I can barely lift a kettle now) and now I have had shoulder pain too (again all on my right hand side). Just a few days ago, I woke up and was really struggling to take a deep breath, my heart rate was extremely high.  I was admitted to hospital but  chest X-ray , CTPA scan and ECG  all came back clear- all blood tests normal. It's 5 days later and my chest is still  constantly tight and I'm short of breath. 

I have never suffered anxiety (so i dont think it's that)  but I can't help but feel there is something seriously wrong with me or the scans are not showing something potentially really bad.  It's got to the point I don't even want to call a Doctor because I feel like have been such a burden on them lately. I don't know what to do.