There's not many people waiting, it should be quite quick I think to myself as I tap my details into the self booking in machine.

Roberta Allen. July 15th. 1980.

The machine acknowledges my existence in this world and I take a seat and wait for my name to be called.

Ping. My name lights up almost immediately. Room four. I knock gingerly and push open the heavy door to your exam room. You are sitting at your desk tapping something into your computer but you immediately turn and face me.

You are tall and attractive. Dressed in navy trousers and a light blue cotton shirt. It's meant to be smart work attire but you wear it almost casually. Open at the neck with the sleeves rolled up. It tells me you are relaxed in your environment. I on the other hand am far from relaxed. I don't like doctors but I know I'm getting worse and I need to be here.

"What seems to be the problem?"

I open my mouth and try to speak but instead, start coughing again. It tells you all you need to know but you go through the motions of examining me anyway.

"Just undo your buttons and loosen your blouse please.... Deep breath for me"

The stethoscope is cold but I follow your instructions and breath as deeply as I can. You have a quick look inside my throat too which you immediately see is almost closed off.

"That's a respiratory infection and a half you have going on there Roberta. I'm going to give you an antibiotic injection, so if you can slip out of your skirt and panties. That would be great"

An injection? Oh no! I hate needles. And in my butt? My legs already feel weak with the thought. I don't want to so I start trying to talk you out of it.

"Do I have to? I'm not keen on shots doc"

You look at me like I'm a recalcitrant child.

"I'm afraid you do if you want to get better. This infection is already very advanced. An injection is the only way. You can stand and bend over the couch or you can lay down. But you need the shot today Roberta...."

You are already drawing up the meds. I really don't have a choice. Oh my God, the size of that syringe... I look at it fearfully and really wish I hadn't seen it. I feel so nervous now but somehow I find the will to unzip my skirt and step out of my panties.

This is getting worse and worse. I don't even have a long blouse that covers me properly so now I am naked from the waist down and standing in front of you. Oh where should I put my clothes? I fumble helplessly. You seem to watch me with amusement but it only makes me more nervous.

"You can put your skirt on the chair Roberta"

I fold it haphazardly, put my panties on top and then lean over the exam couch, resting on my elbows. Oh no. Was this a good position for me to choose? My legs feel like jelly. I feel so exposed. That stupid blouse! You can see the whole of my bottom.

I shift my weight from one foot to the other. You are so close behind me. Poised and ready to inject me. But I need to lay down so I straighten up.

"Sorry doc, I have to lay down"

"No problem. Make yourself comfortable"

I get up onto the couch. It feels slightly better. At least my legs are not shaking now. But what are you doing? I want to see but at the same time I don't want to know. My nerves get the better of me and I push myself up on my elbows and turn to see what you are doing.

My hair falls in front of my face and I brush the red curls aside. Oh no! Why did I want to see that? You are holding up the biggest syringe I've ever seen and tapping the barrel. It's filled almost completely with some kind of milky white medicine. The needle is enormous. I turn away and put my head on my hands again.

I feel you touch my bottom and instinctively I jump. I was expecting pain but it doesn't hurt. Not yet anyway. You are pressing deeply into my soft flesh. Your touch is firm and methodical. You are looking for something. It adds another layer to how nervous and vulnerable I feel.

Now I feel something cold. Cold and wet. It's surgical spirit. Id know that smell anywhere. You are cleaning my bottom. I feel some of the liquid trickle down my hip. The injection will happen next. I literally feel like I'm shaking.

You could hear a pin drop it's so quiet but it's broken by the sound of latex gloves stretching and releasing and then your hand on my bottom once again.

"Ok Roberta, sharp scratch coming.... Just relax...."

I immediately tense. I can't help it. I feel the sharp sting as the needle enters me. Oh my God it hurts. I try and relax but it's impossible. You are talking to me, trying to console me but I can't really tell what you are saying. I can only think about the pain.

"Relax Roberta... Relax... "

I'm crying now, it hurts so bad.

"Take it out... please...."

My breath is catching in my chest and I can't breathe properly. I just want this over. I try to be brave but it's awful. There's a deep burning ache in my hip that just feels worse and worse as every painful second passes.

"We're nearly done Roberta. Just relax. You're doing great..."

Eventually you take the needle out and start rubbing firmly where you injected me. I just lay there. I'm weak and exhausted. Your touch feels nice though. I take a deep breath, exhale slowly and dry my tears from my eyes.

"Good girl. Just lay there a little longer. I'm going to give you some vitamins before you leave, it will give your immune system a little boost...."