laughing into crying

I started rendering this at like.....1:00 pm yesterday....it's still going....didn't make much progress....

When I checked it at 3:00 pm yesterday it said I was at 49 frames, so I'm a little confused about why such little progress has been made and also why it says it's been rendering for 9 hours when in actuality it's been about 23....suspicious..........................

ALSO

For some reason all of the frames before frame 73 are GONE

In the sidebar it shows a small picture as if the frame was rendered but when you rewind it,  there are no frames there. Which is strange because they were there yesterday and I triple checked to make sure I had all frames selected.

I'm considering breaking up the rendering time into a few different computers but I'm a little worried about doing that because I have so many frames to render and it's hard to get past 100 frames overnight for some unknown reason...also my super reflective snow globe fly thru was over 900 frames and rendered just fine, so this is definitely strange.