Red (or pink) in a cat's urine is a red flag symptom.
When it comes to cats, urinary problems may quickly turn into blockages. When this happens, it's a medical emergency, you have a matter of hours, at best, XXXXX XXXXX the cat treated (usually operated on). It's far better to treat the earliest symptoms than be put in this position, which will cost even more if it happens at night, on a weekend or holiday.
If it's a parasite, fungal or bacterial infection, some of these are transferable to people. Keep your hands meticulously washed, litter boxes well cleaned and again, treatment sure beats the complications that may arise.
If you need some help in getting your companion treated, here are some options:
Don't forget to call your local Humane Society for guidance as well. If you have a Pet Smart in town, they often have the numbers for rescue organizations that may also help, at least with recommendations for where (or who ) to go.
It's truly worth doing the right thing - cats have a lifetime of unconditional love in them and ask so little in return. It's really a good deal.