And it works for me :-)
as far as pregnancy test I would go to the doc.
Either that our go to the doctor. I was on several different birth controls and experienced the same thing. Months of bleeding and very heavy. Try taking to your doctor about microgestin 1.5/30 my doctor said she has seth a huge success rate with it. ( going from months if heavy to normal periods)
Yes, it is possible that it did contain sperm. If you are concerned about being pregnant, take a home test to be certain. That's the only way to tell for sure.