I worry so much about losing mine I have seriously thought about buying another one!
One missing temp won't affect it too much... especially after the + OPK. And there isn't anything you can do about it...so I would try not to stress over it too much. I know easier said than done!
I think sometimes we get so caught up in the technical part of TTC that we forgot out charts don't really get us pregnant our hubbies do

So I hope you BDed and then got a new one today.
Lots of