Pleased to hear that you have your safeword now.
To me, tears are an expression of the depth of emotion you are feeling, and that emotion can be good or bad. So on that basis, I am pleased to say that I also cry 'good tears'. I hope this is normal, because I would like to think of other people feeling so wonderful, and pleased it is the case for you.
Now all you have to do is help him to understand....guess time will help, when you have reassured him repeatedly that you are fine. The problem then might be explaining that not all tears are good ones....sighs.
It is lovely to read between the lines of your post and see your obviously powerful and loving relationship.
cariad