Look into other pet insurance programs other than Petsmart-we end up with a lot of clients at my clinic that have been over charged and "burned" by them. Purina has good insurance, veterinarypetinsurance.com is good. Discharge on intact males is normal-have him neutered as soon as finances allow. This will also keep him at your house, too since the main reason he was wandering is because he is maturing and "looking for love"! Introduce a bland but high quality diet for him but also: do not feed him anything for 24 hours straight then introduce him to the good food (without any canned formula) and only feed him this. Anything you add to a tummy that is already mixed up comes out ugly unless the intestinal tract has time to rest. Chicken breast and plain white rice is also ok for a short time to get his system straight. He almost certainly has intestinal parasites that need to be addressed and could be the cause of gastrointestinal issues. One dose of Iverhart Max will eliminate intestinal parasites for a month-something he should be on anyway to protect him from these as well as heartwoms. Don't bother with the store brand dewormers: THEY DO NOT WORK AND CAN BE POTENTIALLY DANGEROUS. Talk to your vet for the best advice!