Kick count frustration

Lindsey
So twice now I've felt a major decrease in baby's movement, have gone to labor & delivery triage, and she's been perfectly fine. It happened again today. Hardly any movement all day. I came home from work, drank 40 ounces of ice water, layed on my left side, and only counted 3 kicks in an hour. So I got up and ate a piece of leftover baby shower cake for a little sugar rush, and started over. 3 more kicks the next hour. So I called labor & delivery and they said I'd done everything right and I should come in if I'm concerned. I try to relax but pull up one of my pregnancy apps on my phone and the article is about how important kick counts are and how you should never wait to go to the hospital if you've noticed a change in movement because waiting could cost your baby's life. As I'm getting ready to go to the hospital, she starts flip-flopping around like crazy and has been moving ever since. 
How am I supposed to find the line between being calm and having faith that she will be okay and being attentive and cautious enough to catch any issues early enough to make a difference? Especially with articles telling me that my baby could be dying?! It's so frustrating. 
I guess I'm just feeling frustrated and needed to vent a little. My wife is very supportive but I know that she thinks that I should just calm down each time and give it a few more hours. And after three false alarms, I guess she's right. But it's still hard to handle the anxiety. What if something is wrong the one time I decide to wait it out? Seriously, if I am already this worried about this kid at 30 weeks, I can't imagine what it's going to be like worrying about her when she gets older!