Is an 100 resting heart rate bad?

I walked 5 minutes to the nearest bus stop sincere closest one was a while away. Anyways, I took my resting heart rate with my iPhone since they have an app and it was 100. I also took my resting heart rate when I woke up in the morning and it was 92. However before I went to bed with no activity it was 61. I'm worried. My godmother knows all stuff medical since she's been in the hospital and she told me if it's over 100 without much activity I should consider going to the hospital. Should I have to worry? I hear my heart beating and it beats in my stomach I don't know why.

You leave out a lot of things. Are you overweight? How much exercise do you do? How old are you? All of those things could be a factor in why your heart rate is so high.
Go see a doctor to get a formal diagnosis, but I would guess that you are overweight and don't exercise.

We usually say normal heart rate is b/w 60 and 100
But we usuallly do not get this much high heart rate in normal healthy individuals. You can get tachycardia or increased heart rate in disease conditions like fever, hyperthyroidism, or anaemia. Also in normal physiological conditions like anxiety, after exercise etc.
Its better you consult a doctor.