Little sex fiends they are. I am afraid they can keep storing sperm for almost a year, the figure 7 pregnancies is often mentioned, but not sure how accurate that is.
cant be helped my other millies upstairs almost killed her i gothome intime to ave her and risked putting her into my 47gal tank, at the time it had only just started cycling but happy to say she is all well now and happy i oved 1 of her babies who was also getting bullied with her so there boath happy now al that space for small fish 
tho i doubt ill get any more fromfrom her
hi thanks for your message. i didnt know it was a female when we bought it, i just let my 3 kids choose whatever fish they wanted,we started off with 7 full grown fish, different types, then when the mollie had babies (the first lot) she killed 3 of the adult fish! think she was trying to protect the babies, whihc is why i bought another tank and moved her into that one! and my little 3 year old son picked the mollie out because he liked the look of it, im finding out a lot more now about how to tell the males and females apart for next time lol!if you go to the main forum page, there is a section at the top called Fish Index (under the newbie board) which has profiles on lots of different fish. If you look under Livebearers you should find for mollies
there is a very good chance that many babies will die or be eaten so it may not become a problem. however if you find your numbers increasing and you don't want them to you can see if a pet store will take them, but they aren't going to take them as fry, obviously. you'll have to wait a while. Not sure how long, someone else should have that answer.
best bet with livebearers, if you don't want babies, only purchase males
