Sound like what I expierenced one time, me and my buddy did a double on two does out of one ground blind. Made perfect shots on both. Went to retrieve our deer and couldnt find blood, we searched and searched and found both ventually,with a blood trail only about 10yds long from where the both deer fell. Gutted them and it was a mess, hit stomack as well as lungs, these were perfect broadside shots too. Couldnt figure out why but I suspected what you said.

Didthe "green stuff" have some substance to it, or was it slimy. If it was slimy, I would say it was probably intestine which would be harder to recover then a stomach hit. John Trout recommends wait time I believe 12 on stomach and 18-24 on intestine hits.

Was it grainy like chewed food, or slimy like the 'goo' from a previous wound??

BobCo19-65 made the exact point I was going to make. Best of luck on your recovery, its gonna be a tough one.

"good shot/missed vitals/green stuff?"

Sorry but "Good shot" and "missed vitals" don't go together. If it was one, then the other didn't happen. The green stuff is either cud/ruminant or bile, in either case, not a good sign but not conclusively a gut shot, as pointed out already.

I once hit a deer had greenish liquid on arrow, ended up being gall bladder. Essentially caught liver, deer went about 150 yds with very minimal blood trail but did find him. Don't give up

are u sure it was a deer and not an alien