Several things "i" would need to know to help ID your flower - cause there are several that it might, could be. Where was it - in your garden? in the wild? what kind of leaves did the plant have, was it bushy? where, location (state, north south east west) was the plant. It could be - a white daisy or a mum type flower.
When taking photos of flowers, get some images of the whole plant and a close up of the leaves or other features. Also a wide shot showing the location. These will help you when you go back and try and identify the plant. When asking for an ID give as much information as possible including month, location and specific environment such as backyard, roadside, etc.
Many plants have identical or nearly identical flowers.
