normal blood pressure..but high pulse? also, digestion and pulse rate...

so i've noticed that lately, if i eat something and get, well, gassy (i ate steel cut oatmeal and a tablespoon of olive oil on it) sometimes (but not always|) my pulse rate will slightly elevate, also. i dont know if i'm way too in tune to my body or what, but i can tell when i'm above my usual 70is pulse rate

so about 20 minutes ago when this happened, i decided to get a reading out of curiosity...so i went to the grocery store and used the blood pressure machine. now i'm aware they're not always perfectly accurate, but it told me i was 115/60 which is good and kinda usual for me, but my pulse rate was 85?
why would my pulse rate be high but evryhting else normal|? does indigestion have something to do with this|? or the detoxing that olive oil does?