I used Pumptech 3 days ago. I havent worked out in a while (as most of you know ive been pretty sick). I did biceps and had an unbelievable pump. I did dropsets and negatives. Now 3 days later i still cant stretch my arms all the way out and where my bicep conncts to the forearm and the arm bends i have horrible horrible pain. im not sure if im sore or if my tendons are out of whack. can you guys help please.