Veterinary questions? Ask a Vet for Answers ASAP
Then it is even more important that you contact a vet ASAP as antibiotics and anti inflammatories can only be prescribed after the pet is examined. If he can't pick his head up he is very sick. You can use a syringe to syringe feed him with baby food to ensure he doesn't become hypoglycaemic but this won't treat the underlying illness. It is unlikely anything related to trimming the whiskers.