30 seconds before he cum, he felt pain. From his b*lls thru his heart and head. Its just after he cum, he moaned like his having heart attack and laid back to the bed, clunching his left side chest.. I dont want to do that time but he said, he will be okay. After 5-10mins laying there, he said he is okay now but he still have headache. Im worried!! I wanna know why? Too much physical exercise? Or is it something serious?