i saw my heartbeat!

Tuesday i was in my swimming classes. When i got out of the pool i saw a bruise  on my left breast on the top-right section where my heart beats close to the center of my chest, it was sore too. I am an 18 year old female. I asked if i could go to the restroom so i can go look in the mirror. Right when i got to the women's restroom my heart started to beat very hard. It was slow, but everytime my heart beated it hurt. And my whole left breast started itching. I looked in the mirror. ill post more later

[Damio]

Cont'd:
When i looked in the mirror i saw heartbeats, irregular heartbeats. I was scared and i asked if i can go home. I was able to and i did go home. When i was taking a shower to go to bed the painful throbbings stopped but the bruise was still sore, and i didnt feel my heartbeat on the upper-left side of my body. I felt my heart pounding in between my breasts in the center of my chest. The heartbeat was at a medium speed too. So i saw and felt the middle of my chest shaking and banging from my heartbeats. I even felt it in my back too. I tried to get a good look at the center of my chest, i pushed my breasts away from eachother so i can get a better look at the center area of my chest where my heart was beating. And there was a lump throbbing up and down. The throbbing could only be felt in the center of my chest, that kind of heartbeat never stopped. I had troubles sleeping because the heart rate increased every hour in the center of my chest. A while later while i  was sleeping my heart was pounding, the heartbeat could be felt throughout the whole part of my body, most felt in the center of my chest. My chest was shaking up and down because of this. I could not take it anymore. But i just noticed that day one of the medicine i took caused the painfull throbbing, because i just got it. And that was the first day i felt painful throbbings?

Can any woman feel their heartbeats in between their breasts in the center of their chest like its powerful and every hour or so it gets stronger and then after a while it starts off how it just started beating strong again?