Welcome to HCM
We understand your concerns
I went through your description. I suggest you not to worry much. You should not worry about such things. You should observe these pulsation. Are they available during your work period, or when you are busy with something, or when you are happy etc? If No, you are clear. If yes, again you are clear. that is it. Means, such pulsations do happen anywhere in the body because of so many reasons. Ignore it and it is gone. If you fear it, then it shall become obsessive and you feel it always.
You might need psychotherapy
and other cognitive behavioral therapies
. I can help you through telephone. Please do contact me through customer care of www.healthcaremagic.com for a telephonic consultation session.
Hope this answers your query. Available for further clarifications.