Missing Delta Ivysaure in PC!!

I know I didn't release it, I just haven't been using it.

I went to take it out of the pc to lvl it up and use it for my team, but it is no where to be found, anywhere. This is not okay. If you look into this and for some reason, I did release it, oh well.... But I didn't! WHY IS MY D> IVYSAURE MISSING!!!