Heart racing, short of breath...?

Hi. I was just in the shower, washing my hair. Ok, so my heart always goes abit faster when I m washing my hair. But today, it went crazy. I went faster than normal and it flt like it was beating very hard. I could feel the pulse in my head.? And I was like short of breath. I had to stop. Plus, my mom told me my face was really red. I m confused? Help? Did my BP go up too much or what? Additional Details: I have hypertension, arrhythmias, and mild mitral valve regurgitation(diagnosed in January) Someone asked my age. I m 13, 14 in May Well, I didn;t feel like fainting, just abit dizzy.Yeah, I have to check my BP daily cuz is have to make a chart. I m going back to the DR. in july to see if he is ogint o give me medications for my hypertension. thanks everyone!