Help Save My Bestfriends

Hi everyone I'm Kayla. This is my cat Obi. He's one of my three fur babies Obi, Solo and Vader. Recently Obi started having diarrhea along with vomiting. I've also noticed two masses near his hips. My moms been out of work due to major surgery and we can't afford a vet visit. It's become urgent Obi now has blood in his stool and a raspy cough. I think what he has may also be contagious as his siblings are starting to share his symptoms. If you could help donate to them being seen I would be so grateful.