Find Parts 1-3 here:

https://www.reddit.com/r/BDSMerotica/s/2FNdtMFBdy

https://www.reddit.com/r/BDSMerotica/s/NPcn0HEwDz

https://www.reddit.com/r/BDSMerotica/s/Ye2rRdwRmw

Opening

You tell me to relax my asshole as much as I can, as you layer a new coat of lube generously spread. The metal rectal retractor in your hand looks so intimidating. You pat my bottom as you firmly push the cold instrument into my still aching hole. I groan with pain and fear. “Shh breathe. Stay relaxed for me, we’re going to open your hole now” as I feel my sphincter burning in protest at the stretch. “It’s ok, sweet girl you’re doing so well, let’s see if we can get you opened up more. You’re so tight and Daddy needs to get a very good look inside this perfect little tushy”. Finally you stop, it feels like my asshole is gaped open wider than ever before.

I lay perfectly still as you begin the exam. The cool air feels strange on the inside of my anus, but then you shine a hot light that feels uncomfortable. I try to squirm away as the heat builds up, but you slap my bottom hard in warning. I hear the telltale click as you photograph me with my asshole spread open but I don’t bother complaining. I’m way past embarrassment at this point.

Deeper

I breathe a sigh of relief as I feel you remove the rectal retractor. You watch carefully as my hole slowly closes - though not all the way, I have a distinct gape which you touch and admire. My relief is short lived. You tell me I need a deeper anal exam. I weep pitifully but there is nothing I can do as you bring out the long scary metal protcoscope.

As the scope is inserted slowly yet unyielding inch by inch it goes deeper than anything you’ve used before. My grunts and moans sound animalistic as my body struggles to accept the intrusion. “You’ll feel some pressure in your belly now little one. You might feel some cramps like you need to poo, it’s ok it’s normal”. You pump some air and distend my rectum so you can see better, while I moan and rock back and forth trying to handle the discomfort for you.

“Good girl just like that” as you press and hold my back down hard against the table and lift my ass back up. I started trying to curl into myself as much as possible moving slightly out of position despite the bindings. You rub my clit to distract me “focus on this baby girl”. Finally the scope is removed as I groan at the release of pressure inside me.

Shots

Little do I know the hardest part of this rectal exam is still to come. I turn my head and out of the corner of my eye, I see you holding an even larger needle than you used on my pussy. My body starts shaking from fear. I am immediately crying hard, pleading and begging “oh no please daddy I’m so afraid. It’s going to hurt so much if you give me a shot in my butt, please don’t do this”.

It breaks your heart to see me so upset. “It’s ok to be scared. But Daddy has to give you your medicine in your bottom. Daddy knows best and you are my very good obedient girl…”. You tell me you will be as gentle as possible but I am getting 8 - EIGHT!!! - total injections delivered anally just inside my soft and vulnerable anus. “I need you to be very brave for me. This will all be over soon I promise. You can do that for Daddy right little one?”

Silenced

With that you force a new penis gag into my mouth as I futilely shake my head trying to dislodge it. There is a hollow tube allowing me to breathe, but it triggers my gag reflex as it goes deeper down my throat. “I know you’re not used to this yet but Daddy has to keep you very safe and make sure you don’t bite your tongue”. You buckle the gag around my head insuring it stays firmly in place.

You spend a long time thoroughly wiping my anus with cold antiseptic wipes. I know you won’t be moved by pity as you make me take all of this treatment. You hold my gaped asshole spread open with one strong hand and press the syringe down directly right inside my asshole with the other. I have never felt pain like this before and I can’t even scream. Instead I just make pathetic gurgling noises around the dildo in my throat.

Almost

The needle burns as you inject what feels like flaming liquid into my pulsating red asshole. All the while speaking gently to me. “I know I know, how much this hurts…Oh my poor sweet good girl…You’re taking so much for Daddy. You’re such a good obedient girl…There we go, we’re almost done…That’s it relax just like that for Daddy…Just hang in a little bit longer babygirl”.

You tenderly rub and kiss my bottom for a while after every brutal shot. I have no choice but to take it, laying there sobbing helplessly and choking on my gag. I’m completely broken, your affection and reassurance serve as a promise that you will put me back together again...