Custom Blog Post Widget abilities

Hello,

Thank you for a great theme!

I was wondering if it was possible to use the custom widgets ability to create a certain widget to appear based on the category of a blog post that is selected. Right now I have 4 main widget categories, and want to show the correct widget type on the siderail if the blog post categories are child categories to a specific parent category

For example:

Any post dealing with facial cosmetic surgery will have a Face specific contact form, while any post with Body Cosmetic Surgery will have a Body specific contact form.

If this is not possible, is it possible to assign a specific widget to each individual blog post? I didn’t see an area within the widgets area to create a custom widget area. I followed the link from the from the theme customization area where widgets are edited, but within the widgets area, there is no ability to create a custom widget area. Please let me know if I am missing something.

Thank you!