I have pulmonary embloism my heart is beating hard and fast. the beat is so hard i feel in my neck is this part of the symptom or is this palpatation?

Go to hospital now: If you're not feeling back to normal after starting treatment for pulmonary embolism (pe), you need to seek medical attention immediately, whether at your doctor's office or at the hospital. Pe is a medical emergency and can kill if not appropriately treated quickly enough. It's impossible for me to tell you what's going on in your body so it's imperative that you seek medical attention now.

Consult your doctor: Palpitation is any awareness of your heart beat, so, yes, this is palpitation. Fast heart beat can be due to many causes including low blood count, low blood oxygen, dehydration, infection, and many others. Given your diagnosis of pe, low oxygen is suspected, and since blood thinners are used to treat it, low blood count is also a concern. You need to see your doctor who can run simple tests.