First Time Experiences

I recieved my Helix today, as well as a bottle of ID Glide. Best lubricant ive ever had. Anyway, after cleaning up, and inserting the Helix, with a little lubricant injected into me as I have heard that helps it move freely, I started doing some contractions. I noticed the tab on this seems to miss that sweet spot just a little. Also when I inserted the Helix it didnt seem to go all the way in, about 1/4 an inch from the very narrow base. I didnt feel the need to urinate, which by the way I am not completely new to anal play, and was able to get that feeling using my index and middle finger. The Helix seems like it may be a bit too long. Is that something that I get used to, and it will eventually go all the way in? Other than that, it produced some EXTREME arousal lol. And I wasnt quite able to keep from "going for it" The orgasm was great with ejaculation. I also noticed that with soo much arousal my body kept trying to move by itself, my toes cringing, as well as a pelvic motion. Seeing as how this was my first use though I didnt give in to these motions. All in all I think the experience was great to start, and look forward to any comments on my questions which I will restate below.

1) I noticed the tab on this seems to miss that sweet spot just a little. (I think this is due to the unit not fully going in me)

2) When I inserted the Helix it didnt seem to go all the way in, about 1/4 an inch from the very narrow base. Is that something that I get used to, and it will eventually go all the way in?

3)Does this unit create as much arousal in you as it does me> (this question is directed at everyone in general)

PS

I am nearing age 19, incase that may have any relevance in any of my questions. Thanks ahead of time for your replies!