While at lunch today, I got a golf ball size knot on my left arm (which hurts and is in pain alot) It looked like a blood clot. My boss encouraged me to go to doc. Turns out it was a spontaneous vein burst of some sort. Said it was probably because of the steriods. Those things are both a godsend and a nightmare. I dont think I will be taking them again. I am sure that little trip will cost me even with two insurances.