To call or not to call?

I seriously am so bad about this. I never know when to call. I hate calling and it's nothing or waste hours up at the hospital for nothing. Last week my dr sent me to the hospital because my heart rate was really high at 146. I was monitored and given fluids and all that then sent home and told to rest because they ruled out anything serious. Well today I went to the store and I have this app on my phone that checks your heart rate. I felt very short of breath so I checked it and it was 176. Extremely high. I came home and laid down and got it down to 128 and then down to 118. Baby seems to be more sluggish today but is moving. Question is should I call or wait until tomorrow? Do you ladies feel like you bug your dr too much as well?