My puppy has a red bulb in her eye. I believe it's her third eyelid. Is she going to be okay? I'm really worried. What can I do?

It is more than likely cherry eye. The gland that helps lubricate the eyeball.

It is completely cosmetic, but you will need some type of medical/surgical intervention.

This isn't an emergency, so you can make an appointment with your vet and have it looked at it to make sure it is indeed cherry eye.