Originally Posted by
Fry
Do you mean after self harming? [Didn't want to assume.]
It may have been shock, or even something as simple as standing up too fast. It's hard to know what it was without having been there at the time, but am glad to hear it went away quite fast. It might be worth keeping a note of what else you are doing / is happening if it happens again so you could recall the notes if you felt that seeing a doctor about it was worthwhile.
If it happens again, sitting down until you feel better might be advisable instead of trying to walk and do other stuff when you aren't so physically stable.