Sudden soreness at the injection site

PineCone99

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I've been doing weekly shots for over 6 months now, and this has never happened before.

But for the last 2 weeks, the injection site has suddenly become sore. If I lightly run my hands over the spot the following day, it feels bruised — though there's no bruise and no rash. Just a small red dot where the needle went in, and it's tender.

What might be behind this? My routine hasn't changed at all: alcohol wipes, a new bottle of Hospira BAC, a fresh syringe, and so on.

Could I be injecting too deep? Or is there less fat now, so it isn't going into the fat layer? (I've always used the stomach area, rotating the spot each week.)

I am using a new kit, though I did have this one tested and it all came back good.

Any thoughts?
 
Maybe it's the skin sensitivity some people mention — allodynia. If the discomfort stays right at the spot, perhaps those nerves are simply a bit more reactive. In this case, I'd say going deeper is better?
 
KLOW was the only one that caused this for me when I injected into my stomach. These days I inject into my butt cheeks, and there is 0 pain.
 
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