Black Balloon Molly

Question
I need to know why my female balloon molly keeps pooping? I'm wondering if she may be pregnant. I have a black and white molly and a red platy whom I believe are males won't leave her alone. The black and white molly keeps putting his mouth on her anal fin. I have only had her for a couple weeks. Can you give me any information. Thanks.

Answer
Now that is strange.
Does she appear to be larger than usual? She is more than likely pregnant if she does (or has a disease).
As for the pooping I wouldn't be too worried. Is she eating more than usual.
The male putting his mouth on her anal fin is a new one on me. He could be acting agressively towards her or it could be a molly egg fertilizing thing.