Definitely need to get that checked out... Look for swollen nuts... If you start to see that run to the doctor! I have a buddy that experienced the exact same thing, painful ejaculations... Then one of his nuts swelled up! He went to the doc and found out he had testicular cancer and had to have one of his balls chopped off! No joking around! Keep an eye on that my friend! I don't want to freak you out, but this is a true story! Good luck and keep us posted!!!!!!