I did mine myself after the first week. I was terrified and sure I couldn’t do it but it was really not hard. There are several good videos on YouTube of people doing their own that really helped so I would recommend checking those out.
I propped the one hip up on the bathroom counter (not really sitting but kind of) so there was no weight on that leg and I could see the spot I wanted in the mirror. Then I just twisted around and jabbed it in. I am right handed and was really nervous about doing it on the left side but it was just as easy.
Dispense the medicine slowly. Then after you pull the needle out rub the area vigorously for about 5 minutes. Then sit on a heating pad for 15-20 minutes. I also iced for just 1 minute before the shot - don’t ice too long or the muscle will tense up. I don’t really think the icing was necessary but it made me feel better to do it, took some of the fear out of it I think.
The heating pad is a must - I was out of town a couple of days without it and tried just using a warm wash cloth. I definitley noticed a difference in soreness without the heating pad.
These were all tips I found on the internet and I never had any lumps or pain other than a little sore muscle type pain every once in awhile. Most of all try to relax as possible, if your muscle is tense it will hurt a lot more.