Gerbils ear is bleeding ?

My gerbil is 3 years old, and right below her ear there is a little shaved spot that is red. Does anyone know what that is and what I should do to it ? This has happen before, but it went away .
I think that you should just soak it every sunshine if it gets worse, otherwise just take off it alone.
If you don't want to bring her to a vet, try putting some olive or vegetable oil on it with a Q-tip. It should go absent soon. If it doesn't, get some antibiotics to put on it.
Answers:    bring it to the vet it is probably a bruise you or u could try a soft thaw out rag on the red spot

Im desprate please try to answer my question (a):
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