You really need to seek a vet who is familiar with rats. Wheezing is a sign of respiratory illness, and can become very severe if not treated. It's not bloody discharge, but porphyrin, which is not blood, but can be a serious sign of stress or health issues that need to be treated by a vet.
Take him to a veterinarian. Blood coming out of his eyes? Did he get out of his cage and possibly get injured?
Anything you can tell a veterinarian about the situation would help them determine what is wrong and possibly offer a solution for your pet.
Sounds like a brain tumour to me, you need to take him to a vet asap. Goodluck!
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