I'm only asking because according to my list of dwellers, I have 19/34 dwellers. That's really odd because I've always had 19 dwellers. How did I loose such a large amount without seeing them? I'm on an android phone, is there any way to fix this problem? Is this a glitch? Can it be fixed? Am I the only one with this problem?

Another thing: I've been waiting for dwellers to enter vault the entire time I've been playing this session no one ever visits the vault. I've had to get all the ladies in my vault - which weren't many - pregnant to get the 19 that I have already. I've even stopped getting raided. Should I just start a new session?

Maybe you upgraded or built more living quarters so that dweller capacity has increased to 34, it doesn't mean that you had 34 dwellers.

I'm not entirely sure if this is a serious question, but yes: the second number is obviously your maximum capacity and not the number of dweller's you previously had. (why would the game even display the number of deceased people?)

As for new dwellers: dweller's don't just appear outside your vault unless you build a radio station. You'll have to make the babies yourself.