I'm on my first cycle. 9 wks in, 200mgs if test cyp two times a week. I was also doing the same with EQ but on the advice of this board I stopped the EQ. When I took my shot today everything went good, I pinned myself in my upper and outer thigh, pulled back on the plunger, no blood so I proceeded with the injection. When I pulled out it bled a little more than usual and then about 30 seconds later I got this unbelievable and uncomfortable head rush. It felt as though my heart was going to beat out of my chest. This happened once before with the EQ as well. Can anybody tell me what this could be and what the ramifications could be if I did indeed shoot this stuff directly into a vien? Felt ok after about 8 or 9 minutes but still 5 hrs later I still feel just a bit off.