I have been on my first cycle of testosterona 4la (same as sustanon 250) for 5 weeks now and every time I inject I can't even walk without extreme pain in my glute were I injected. I belive I am doing everything correctly when it comes to injecting. I even switched cheeks and the same thing happened. My glutes have alot of swelling to after injecting. It does not hurt at all until about 4 hours later. I have 5 weeks to go in my cycle I only inject 250 mg a week. Some body please help me!!!