Read the following paragraph and answer the question. Give ONLY the answer, no other words or explanation.

For example:

Answer: <most likely answer, as short as possible>.

Paragraph: My gums are still bleeding , although I think the bottom two have pretty much clotted ( do n't you love that word , Barb ? ) but the top one is still open . I ' m afraid to eat or drink anything tonight , in fear that I will suck out the clots ( I know Barb is loving this . ) But I am on wonderful hydrocodone ( aka generic vicodin ) and I can do most of the things I usually do , except exhausting things , which is why I moved into Emmaus yesterday and not Saturday .

Question: Why are the person 's gums bleeding ?
The person had their wisdom teeth removed .
The reason for the person 's gums bleeding is not clear from the text.