First time masturbating

Sooo I am 13. Most people say it’s fine and most 13 yr old girls masturbate. Normally if I get horny I ride a pillow. But I got bored with that. So I was in the shower and I kinda got a lil horny so I was looking around a I have an old toothbrush I don’t use and it was an electronic one. I put it on my clit and say down and moved it around a little bit and omg I found the spot. It felt so good. Idk why but my legs kept twitching😂 why do they do thattt? Oh well lol it felt amazing. Kinda hurt a little but mostly amazing.