Help, what do I do

So I wanted to se if being choked was something I’d enjoy so I choked myself a little bit yesterday and now my neck hurts today, not like intensely but it feels a little stiff. And I’m developing bruises. I live with my family, I’m single and I haven’t been out of the house in a week, how do I cover this up? And how do I know if I hurt myself? Because I tried to do it so that I could still breathe while doing it, and I bruise really easily so it makes sense that I’m bruising, but I’m worried that I could’ve hurt myself. I’m really freaked out and i don’t know what to do.