First Infection Scare

I did an injection in my flute two days ago and it didn’t really hurt as my glutes usually don’t but today a noticible and big knot popped up on my hip bone area. It has very little pain and doesn’t feel hot isn’t red but it different then my other side and I just wanna know if this could be a possible infection. It was 1 ml of test prop which does usually knot up and hurt but this one just a little different any advice?

Question - “could it be an infection”
Answer- yes

Do I think it’s an infection from what your describing. Absolutely not.

Thank you I’m gonna give it a day or two since there isn’t really much pain and see if it goes down or if it gets bigger to decide since there’s no heat and my temperature hasn’t changed