Music missing

[Draccojr1998]

I am a paid Spotify premium subscriber. is there a limit on how many songs you can have in your library? I have about 400 and I keep noticing that songs are missing, so I have to go back and add them. This is a problem because I am not aware that they are missing until I hear them somewhere else and have to go at them back to my Spotify library to play them whenever I want.