Keep in mind that any app can and typically does have its own set of icons -- the app itself or scaled down notification icons that often match or are similar to their app. An app developer will choose whatever artwork they want to create their icons, or take otherwise generic ones and alter them accordingly, or they may rely upon someone else who has a more creative and artistic eye.
So this 'female icon' you're referencing could be for some kind of female-focused health app, or a woman's support group of some kind, or whatever. It is such an iconic symbol with a lot of history behind it so it's likely there are countless apps out there using it in some modified way.
There's no way to give a definitive answer to your question, especially since we cannot view it. But even if you did post a screen capture of it, unless it's a really popular, common app or by chance someone else has the same app on their mobile device, the odds if identifying it are slim. The best place to determine what icons are showing up in a Notification bar is using the device itself.
