Hi, Kelly. Did you figure out how to do your resting pulse? You can do it in bed, too, right before you get up. Just take a count from your wrist for 15 seconds, and multiply it by 4.
I have found a lot of satisfaction in lowering my resting pulse over the past few months. It's not the only indicator, but it's neat to see.
And don't worry too much about all those weight fluctuations. Mine goes up and down like a ping pong ball. That's why it's more meaningful to use a 5 day moving average.
Even then, you're bound to hit a plateau now and then. As long as you aren't starving yourself, and running a reasonable daily deficit, you will eventually break through it. My last plateau took 5 weeks!
Have a great weekend!