Throughout my first 3 cycles I never aspirated. I injected into a vein one time and it hit me like a ton of bricks! I was dizzy had shortness of breath and I thought I was going down. I felt O.K shortly after but it was a very unpleasant expirience to say the least. Needless to say I aspirate every time now. Oh yea, I hit the vein when injecting in my glute.