I recently brought a sperm stopper ! Which sounds fun but when I inserted the ball , it was painful and made my eyes water and made me bleed a little !!! I have tried inserting this on 3 different occasions and to the same outcome ? Any suggestions would be great
Did you use lubricant? Hopefully the sterile kind? And wash it thoroughly before each use?
It should not be causing you to bleed. It might feel uncomfortable or unusual at first, but pain and blood are not good signs.
What Nat said 
Have you been able to use it previously at all? Just wondering if you may have an infection.