Pulsating feeling & pain. Abt my heart!

I am sensing pulsation feeling on the middle of chest and neck on sudden moment for instance, suddenly standing up or sudden moment while sleeping. I can feel the heart beat for 10-15 seconds and it gets to normal If i touch the area of  lower neck/middle of chest i could sense a sore pain. Even after climbing stairs i could feel the pulse in side of my head, neck & middle of chest for 10 seconds I have taken ECG twice and appears to be normal one year back i have taken ECHO & TMT and seems to be negative. Recently i took a blood test and found total cholesterol level is 212 & ( a ) lipo protein is 61.4mg higher than normal. Hs crp test is showing 8.9mg I'm very much worried abt my heart regarding the situation and it makes me feel anxious all the time please suggest treatments to recover