Hi - for what it's worth, I'm an original needlephobic too!
It sounds like it's the "mix & match" stuff as I call it, where you break a little bottle of solution and mix it with the dry stuff, then draw back out, change needle again and finally inject.
The trick is to pull some air into the needle before drawing the final lot, then push the air into the bottle to create slight pressure. Keep the needle just below the final anticipated water line, and tip the bottle slightly towards the gap in the rubber stopper. That way you can see where it's all got to, and get the last little bit out)

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I was lucky enough to find that one of the people in my village is a retired health visitor, so she did the first 3 sessions of IUI injections, where you had to mix the drugs and change needles several times. The last IUI I had to bite the bullet and do myself as I was abroad!
When I started the first IVF drugs, again you had to mix them yourself (as described above), but this time it was all premixed and you get a solution-filled pen with a box of needles. You just need to remember that
if it's kept in the fridge, to get it out and let it warm up to room temp about 1/2hr before hand!With the pen, all you do is set the dosage dial (then leave it on your setting), pull out the end, change the 'nib' and away you go! I tend to pinch a good inch of skin - having some 'padding' helps - but my DH has to do my left side as I tend to bruise that side, being right handed so not as adept on that side. To be honest, the first IVF stuff was more painful than the second lot, and so much more hassle. In fact now we've got our BFN, my DH can't wait to start on me again in January!!
Send me an IM if you want to see if you can do it yourself, as I know timing is pretty crucial, and if you can, it's so much easier. I promise it does get easier, though I know how emotional it is when you're faced with having to go through this routine - no matter how many times you may have already done it.
Hope this helps!

Love Jess