Hey, thank you so much for your very quick replies !
@Soren I've got an industrial piercing too but I didn't get this nausea/blackout/near passing out feeling so I guess I am getting more and more sensitive with time ?^^
But this is very interesting, it's true I was probably tensing my muscles a bit too much/more than usual... I'll give this some thought...thank you for your kind advice !
@Sarah Louise wow 3 times a day ! I admire you for that

makes your input even more valuable, thanks ! I alternate between my two thighs for each injection so that each site gets 2 months to recover instead of one, but it is true I always chose the same area on the thigh, without really thinking about it because it never hurt so I thought I had found the right spot and should stick to it.
I'll definitely give those two parameters some thought before my next injection as I don't want it to become a real, chronic problem. Hopefully this wasn't the last one I was able to give myself

oh, and @Devlyn Marie : <picks Devlyn Marie up from the floor and offers some coffee> sorry you passed out because of my topic^^ but I don't think I said anything shocking and I really need help with dealing with this :S I hope you were just using irony... in case, I put a warning for the sensitive ones