How can you save face after snapping at work?

“I share a space at work with a woman that’s always making remarks about my weight, whether it’s about food, exercise or whatever. Yesterday I snapped at her and screamed so loudly that I’m pretty sure the whole office heard and I was a crying mess.
I’m scared of what my co-workers now think about me and I don’t want to seem like I’m crazy. What can I do?”