I had my 3rd session last night, new to anal play. I've been trying different things in some pretty long sessions. Anyways, I had a hands free wet O last night. Damn was it good.

What worked for me may solve your problem. It was in for quite a while and I was getting sensations, but just not getting 'there'. So I decided to sit on the edge of my bed. While there I started moving my hips in circles. This was great as with my weight on it, it really helped it move around inside me. I start putting more pressure on my P which was just what I needed as I started grinding harder and faster while I slowly built up and exploded like a fountain.

Anyways, sitting on it could possibly solve your problem if that works for you as well as it did for me.