I just currently started my stack of sustanon 250 and deca. 500mg of sus and 250 deca/wk. It is the tird day after the injection in the left quad and i can barely walk. My leg is swollen around the knee. I was wanting to know the cause of this and if there is anyway i can prevent it in the future. Any info will be greatly appreciated. Im suppose to go again today but dont know if i should or not? Thanks for any info