One thing I would definitely consider doing is contacting your local humane society as they may be able to offer you treatment at a very low cost or at least steer you into the right direction of a veterinarian who will work on a sliding scale based on income in your area. Another option is to discuss the issues with your veterinarian and ask them if it is possible that they offer a good Samaritan discount as this is exactly the scenario you have here. Some do and it can range anywhere from 25-50% or no exam charge but you have to pay for medications. It would be best that she get evaluated but until then you can get little noses saline drops for her nasal congestion and place a drop into each nostril. This should help to loosen the mucous in her nose and make it easier for her to expel it. As you know cats who cannot smell don't eat very well so if she is a mom to be we really need to be sure she is getting ample nutrition. Use the drops several times a day. Put her in the bathroom with a hot shower running as steam too can help to loosen the discharge. Make sure she is eating kitten food and you might even want to offer her canned foods as they have a bit of a stronger smell. I cannot suggest anything oral at this time because of the possibility of pregnancy but do contact the vet, if you have good relations they may be able to work something out with you.

Thank you

Theresa