Hello, Today Was A Little Bit Of An Overwhelming Day

Hello,

Today was a little bit of an overwhelming day and I had a few questions related to some symptoms I've experienced today. I am a registered nurse so I tend to worry and self diagnose myself. Today at work due to feeling overwhelmed with a few personal issues, I started to feel chest pain. It did not last however. At times when I am thinking a lot or stressed, I do feel left sided pain in my arm and wrist.
I've had ECGs in the past and all have come back ok. I've also had a stress test last fall and it turned out fine. This evening now I am feeling a cold wet feeling on the top of my scalp. I've had this sensation in the past as well however it never lasted. This evening I do feel it more than before. It a light cool wet feeling in my scalp which feels like I need to wipe the wetness away however there is no moisture there.
I am concerned about what this could be. Also the on and off left arm pain concerns me. I do not get chest pain with exercise at the gym.
The pain seems to worsen when I think about it almost like a psychosomatic response.
I would appreciate some advice on:
1. the on and off left arm pain with stress. (rarely chest pain)
2. cool wet sensation on scalp
3. nerve pain in left arm when I give myself a deep neck massage. I feel my muscles in the shoulders are tight.

Email: YYYY@YYYY

Thank you kindly for your assistance, Cindy