Masturbation Help??

I don't really have anything to get off by. I'm 13, so I can't just go to a sex store or get things from Amazon. Do you know things around the house I can use like a vibrator other than a detachable shower head or massager? I've used both of those already. I had a personal massager that worked wonders but it broke, and I don't have a removeable shower head . Any ideas?? Also, what exactly is an orgasm supposed to feel like? At my sister's house I used her shower head and my body felt weird. Like, my legs were spreading and my entire body kept shaking. My vag felt like it hurt, but kinda like in a good way?? Idk how to describe it. The weirdest part is that I couldn't control any of it. Like, I didn't want my legs to spread, they just kind of did. Is this what an orgasm is though? Help please!!