Your wound looks GREAT to just be a week past surgery. Based on my own experience, the larger, swollen area at the bottom (about mid-ear) is where the vibrating mechanism of the implant is located and your magnet will be above that. My pics might help you guesstimate where your magnet is.
In my first picture (the wound), the mid-ear section looks like yours--it's protrudes more than the other areas. Then in the second image, you can see that my magnet pad and sound processor are above that.
Glad you're through the hard part! 🙂