Today was my first Aneros sessions! My experience was kind of…. mixed.

So today I received my Aneros Helix Classic through the mail. Opened it as soon as I got home. I wasn’t sure to start then or start tonight, but man I was so desperate to try it out so I did. I used astroglide as lube. In bed on my back and legs bent.
Now, I didn’t have too much trouble with the contractions. I’ve actually been doing kegels for like a month already. So my PC muscles aren’t exactly weak. I was just doing repeated contractions. I never hold them. At first I didn’t feel anything. But I expected this. The more contractions I did, the more I felt I got the feel of the toy. As a result, the more relaxed I felt. Once I got the feel it, my attention went to my anus/prostate. I was actually feeling the toy thrust inside of me and felt the tip massaging the wall, prostate. And then started feeling so pleasure. I felt like I was having an orgasm for a while once I felt the tip of the toy massaging my prostate. Started feeling good. But I guess since I’m new and my muscle are barley using the toy for the time, I couldn’t consistently massage the prostate while I was being pleasure so the pleasure went away. Took out the toy and lubed it up again as I was getting dry. Tried my best to get that orgasmic feeling again, but couldn’t. But I was still enjoying the toy any ways and kept doing contractions for a while, even tried 3 different positions.
But weirdly, the toy stop feeling good. And instead of pleasure, I felt like the toy was scrapping the walls of my rectum. I’m not sure why. It’s possible my anus wasn’t lubed enough. Like I don’t think it was massaging my prostate any more. So I stopped. Ended the sessions there. I think I may use the toy again tonight though! I was so fun and I hope the scrapping won’t happen again.

Anyways, any advice? What should I do? Hold my contractions? How long? What position should I do?