Hello and welcome to flytrapcare!
Shamrock wrote:When will it flower? Does it need any extra care?
When it will flower depends on quite a few things. How warm it is, how long the days are, and how healthy the plant is are all relevant to how long it takes the plant to flower. When it is flowering, it doesn't need any extra care, you just need to be sure that you are giving it the best care it can receive. Just be sure to follow the basics of caring for them, i.e. LOTS of sunlight and clean water (distilled water and rain water only).
It sounds like your plant might be one of those plants that could die from flowering. It also sounds like your flytrap might not be very healthy. It's not normal for them to lose all of their traps. When they go dormant, they do lose quite a few, but not all.
A photo would go a long way to helping figure out how flowering would affect your plant. Also, some care history would help.
1) Do you live in the United States or Canada? Or do you live in the southern hemisphere somewhere?
2) How many hours of direct sunlight per day does your plant get?
3) What kind of water have you been using to water your plant?
4) How long have you had your plant and when was the last time you repotted it?
Matt