I hear you breath a sigh of relief as Amy closes the speculum and removes it. Even though the speculum has been taken away, your bottom is still open slightly and I can see your sphincter twitching as the muscles try to return to their original position.

You squeal in surprise as, without warning, I thrust a lube syringe into your pulsating hole and dump a full load of thick gel like lubricant inside, quickly following it with my gloved fingers so to spread it evenly.

You gasp as I turn back to the tray and lift up an item. 'surely not, she can't be serious?' you think, stretching your neck at an awkward angle to get a better glimpse of what I'm now doing.

"Mr Jones. This is an anal dilator, they come in different sizes as you can see and we will be sending you home with a set of them. This one is large and thick due to the fact we have already been stretching you in other ways"

You can hardly believe it when, over my scrubs, I start securing the straps around myself and am now advancing towards you, wearing the large strap on 'dilator'. You stare at me but I ignore the incredulous look of shock that's etched across your face and carry on speaking...

"You'll see there are straps that enable them to be worn by a nurse, carer or your wife if she is able and willing.

You whimper as I line up the thick silicone cock against your puckered hole, which is now oozing with lubricant. I begin applying steady pressure, urging the cock forwards gently until the monsterous length begins to disappear inside you. You give a low throaty groan as the bulbous head pops through your tight band of muscle and catches on your prostate gland. "Ahhh nurse...." You're lost for words as the pleasure hits you. It doesn't matter, I need no further comment from you. I pull back and rock forward, repeating the process again.

"This is a very good way to keep up with your stretching Mr Jones" I tell you in a clipped and professional tone but you are not listening. You are lost in the sensations of the treatment as I thrust into you again and again, angling the dilator in a downward motion so that the head of my cock makes maximum contact with your prostate.

I pull out of you and it's only then that you notice that Amy has hitched up her dress and is now strapping on even bigger cock. You can see her lace topped stockings and skin coloured suspender belt as she attaches the strap-on in place before advancing towards you.

This is the largest of all of the dilators, the girth getting wider towards the base of the shaft. You grunt and begin to whimper, shifting your hips as the pretty 21 year old penetrates you with it, sliding all nine inches deeply into your bottom and back out again only to repeat the process, fully impaling you with the huge length time and time again until you can't hold back anymore.

You give a gutteral cry and a small puddle of ejaculate falls to the floor. Amy smiles and pulls out of you, patting your bottom.

"Excellent Mr Jones. You are responding beautifully to this treatment session. Don't be embarrassed about ejaculating," she tells you breathlessly... "it's a sign you have truly relaxed and that the treatment is working."

I nod in agreement "yes, good news David. We are very nearly done for the day. We just need to get your injections done now and then you are free to go..."

Nervous apprehension hits you with the force of a crushing weight. 'Injections...' You'd almost forgotten about those!