My 1 yr old cat is sick, please help me

My unspayed female cat is suddenly acting really sick and I’m scared. Her breathing is very fast, her ears feel hot, and there’s a small amount of bloody/brownish vaginal discharge. She seems uncomfortable and not like herself at all. She keeps drinking and shes just sitting in my lap (not usual).

I think this could be something serious like pyometra (i hope not), but the nearest vet is really far from my home, and I don’t have money because I’m a student. My parents aren’t supportive and won’t help me take her to the vet.

Has anyone dealt with something like this? Are there any low-cost options, emergency funds, or things I can do right now while trying to find a way to get her seen? I’m worried and just want to help her.