Biomex labs question

ok so ive ran gear a few good times in my life, ornagon labs and pro labs. Never really experienced any pip aside from a time or two. im currently running biomex sust 250 and im going into my 7th week. from my judgement it feels like its either dosed right or even over dosed because ive never felt this much strength gain and sex drive. But, and a big one, i am getting pip with each pin. Its almost bad enough to where i cant train delts until the third day after and then have to pin again. Can anyone give me suggestions as to what may be causing such bad pain? is it something in the ingredients? the stuff feels really strong it just hurts like hell.