What Causes Increased Heart Beats?

Hello I was resting in bed and I noticed. I can feel my heartbeat throughout my entire body. I can feel it carry the blood to my fingertips and back around and to the ends of my toes. I can even feel it behind my eyes and up halfway to the top of my scalp from the back of my head. This is concerning to me and I've just brushed it off for the most part. I am a nineteen year old male and I have a low to medium stress level mostly but ever sense I graduated high school I have had more. Furthermore my biological mother had heart problems and died when i was about 8 but doctors cant believe how strong and well my dads heart is. i was wondering if i should dig deep into my empty wallet to go see a doctor or if it's just my mind playing tricks on me as im trying to go to sleep.