"So this one is B5" Again she felt the coolness of the alcohol as he thoroughly cleansed her skin and then once again came his firm grip to her upper arm as he began stretching the skin in order to execute the necessary "z track" injection technique. This technique means that the serum stays deeply in the muscle and doesn't bleed into the surrounding tissue.

Beth couldn't help crying out this time as it was a painful injection. It felt like the serum was thick and heavy as it was forced deeply into her muscle. Beth had quite small arms and it seemed like there was a lot of fluid forced into a small area. It also seemed that this injection took Ben a long time to administer and that the burn of the serum lasted for a long time too leaving a throbbing ache that radiated into her shoulder. Eventually, he removed the needle, pressed firmly on the injection site wiping away a droplet of blood and finally applied a plaster. Beth sighed and gently held her aching arm for a moment. Two down, four more to go.

"You're doing really well Beth. Now let's get your thighs jabbed. I want to give you a shot of Hydroxocobalamin and one of Biotin. These will both be a massive help for your energy levels and your immune system. Just lay back. I will try and make this as comfortable as possible, there might be some surprises to help with the discomfort"

Beth did as she was told but nervous apprehension flooded through her. What the hell did he mean by 'surprises' She was sure that this was really going to hurt whatever he did and she just wanted it over with.

Ben, however, had removed his latex gloves and began lightly and gently stroking her thighs, testing her soft milky flesh to find the most suitable place to inject her upper outer thigh, but also trailing his fingers up her inner thighs and the lightly across her sex. It was very relaxing and Beth immediately felt fresh arousal beginning to pool between her legs.

"Do you trust me?"

"Yes"

He smiled then opened a drawer, removing a piece of black fabric. Beth was puzzled but not alarmed when Ben tied a blind fold around her eyes and everything went black. She couldn't see a thing. The stroking of her thighs continued and then Beth felt the low hum of what sounded like a sex toy. She gasped as it was lightly passed across her wet folds. Arousal coursed through her sex, making her gasp and moan loudly. This was definitely not your average medical setting!

Ben began lifting her feet into the stirrups again, only this time, Beth felt him strapping them down firmly with padded leather restraints. He moved around the room opening more cupboards and drawers.

Presently, another kind of restraint was also fitted around her hips and also some kind of bar between her knees so that she was effectively, totally immobilised from the waist down. Beth strained in her restraints but soon found that she was absolutely, unable to move and especially, close her legs. She felt vulnerable and exposed but also extremely aroused. She was totally at the doctor's mercy.

"I don't want you to orgasm yet Beth. Is that clear?"

" Yes"

" Good girl "

Ben had connected the humming sex toy to the restraints around her hips and the humming was persistently, but ever so gently, buzzing against her sex. Beth could feel layer upon layer of arousal building and she panted hard to control her need to cum.

Ben's ministrations were driving her into such a heightened state of arousal that she wasn't sure how much more she could take without tipping over the edge.

The hospital gown he had made her wear had long since ridden up and bunched around her hips. Only her breasts were still covered but they didn't remain that way for long. She was aware that the doctor was using scissors to cut the gown off of her body and now her breasts were exposed to the cool air, her nipples engorged and tender as he pinched and pulled on them.

Ben placed a gentle light weight clamp on each of them, tugging gently to check that each was secure. Beth moaned as more and more arousal shot through her.

Suddenly, Beth was forced to revisit the harsh reality of the injections as she heard the now familiar snap of latex gloves and then, the sudden sharp scent of surgical spirit filled the air once more. She felt the cold swipe of surgical spirit soaked cotton to her upper thigh and then the sudden pain of the needle swiftly penetrating her smooth toned leg and intense pressure as the serum bored into her tender muscle. Immediately tears sprang into her eyes soaking into the blindfold.

In the same instance, the sex toys buzzing increased between her legs and then something cold and wet was placed at the entrance to her anus, followed by pressure as a cold hard object was painfully pressed against her tight ring, exerting increasing pressure until her hole was forced to relent and allow access as the object was pushed inside her.

Beth opened her mouth to complain but was immediately silenced as once again the cold wipe of alcohol signalled that soon, something much worse was about to happen.