You can upload a photo here--you just need to upload it to a photo sharing website first to get the html code. Once you have the html code, there's some text that has to be added at the beginning and end in order for the photo to display.

From your description, my guess would be Hibiscus syriacus/rose of Sharon. There are varieties with pink flowers--I've got one--as well as blue, white and white w/maroon eye zone. Are the seeds fuzzy/hairy around the edges? I have rose of Sharon seeds from my shrubs and am wondering if that could be what you've got. I don't have a picture of the seeds but here's one of the flower:

{{gwi:236644}}