I've selfharmed a couple of times over the years. (perhaps two dozen times total) I started when I was very ill and there wasn't a lot of me that doctors didn't see except for what's hidden beneath my bra and underpants. So yes, I cut and burned there. Only on the front and back, though, not between *you know*. And the burning was only on the "upper half".

My more recent SI was also in those places because it's easily hidden.