I can feel for you.
Hello.
Looks you had plenty of advice and compassion.
Anxieties are often based on no real evidence or experience.
Yes, needles are about entering own's body skin and it's against about self-preservation instincts..
I've had plenty of needles stuck up in my body. Do I like it? Guess...
As for sampling, if it's 'pin prick', it's pretty good, as it doesn't go deep and not into veins. Veins can be funny.
I never really liked having blood samples from veins when I was sick as child or teenager and they had to follow up on something.
When I was 6 or 7, I spent 3 weeks in hospital over Xmas (surgery removing blood cloth right next to my voicebox after stupid bang,long story).
That was pretty hard as we had some sort of immunisation or what, BIG needles whacked right into our thighs twice a day.
It was so much worse as they injected quite a lot of liquid into the muscle (you know, when they need to hit it up the bum/muscle/ - same principle, the stuff has to go to big muscle)
I don't remember much from my 'early' years, but the queue I always tried to joing amongst the last ones - the general feelings when in it was contagious.
Or, when I was hospitalised for another reason as teenager, I had the IV connected to my back palm - wee 'tap' with IV plugged into it. When they changed the hands after few days (not to damage the tissue or what), the nurse played with the needle under my skin for quite a while. After few minutes and couple fresh wounds, she gave up. Then she asked me about drinking regime. I was pretty dehydrated. BINGO. Shortly after it was just fine. The vein looked like quicksilver being chased by the needle.
I'm scared of heights (on top of structures). Seriously. But I love flying - paragliding, gliding, helis, anything but sitting in the back of an airliner.
I feel queasy when seeing other people's open wounds bleeding badly, but I don't mind my own blood from occasional nosebleed - got used to it.
What I do when having needles stuck in my arm veins, is thinking of something nice looking away.
Yeah, I did witness broken needle in thigh of one of the boys in the past too.
So what? I bet he contracted muscles and jerked.
One can kill crew when executing wrong control input. Are we not going to fly because of some inherent risks we have to minimise or watch out for?