So lately I've been focusing on my heart as I've noticed that I'll have periods where my heart will be about 120 bpm for an hour or 2 but I've scheduled a doc appointment or next week for that 

But because I've been focusing on my heart more I noticed if I'm getting up for a glass of water or something and I check my pulse it will feel like its beating harder but my hr will only be in the 70s or 80s and then when I sit down it will go back to normal.

Does anyone know if this is normal lol.