I own four guinea pigs, two boars and two girls. One of the girls has been showing symptoms of an upper respiratory infection in the recent days. She's still eating, drinking and pooping regularly however her eyes and nose are runny and her breathing sounds odd. The vet we had initially taken our animals to closed about 4 months ago and we have yet to go to a new one. We called a few of the vets in our town and they all said they were limiting new patients due to covid19 concerns. We live in a small town so our options are quite limited. Are there any home remedies for it? OTC medication I can buy online?