I had to start using smaller and shorter needles. I do subQ and use 27g 1/2in which does make it harder to Inject but reduces pain greatly in my case

Subq or intramuscular? Sometimes for subq if you rub the spot firmly to diversify the spread of the T it can help. Ive heard that that is much less effective w intramuscular so if its hurting you it might be better to switch injection types. And lastly maybe test to make sure you're not allergic to cottonseed oil or whatever oil is in your meds, it's what T is suspended in to make it an injectable medication and mild allergies can cause burning and tingling reactions.