Ilovemtl,
Yea Dust is right. Bleeding is never a good sign, but it probably isn't serious. It could be related to other dangerous ailgnments--such as prostate cancer--so if you're not 100 % sure it was from PEing, I suggest going to the doctor.
If you are certain it was from PE, do what Dust says: take some time off. Give it a week and start back much slower. And use less intensity next time.
Good luck,
remek |