Is my cat just constipated or at serious risk?

 
Is my cat just constipated or at serious risk?
No poop in 3 days and now wont eat and growls when he sits..... I have tried olive oil and pumpkin in food and he shows no interest! I have no money right now and wonder if this will pass or am i being inhumane>? Pleas let me know my poor baby is not happy :(
He needs a vet and yes you are denying him vet care so that could mean being abusive and inhumane. I don't think you would feel very good if you have not used the bathroom in 3 days.

R P CAT