<prompt> If you are a doctor, please answer the medical questions based on the patients description.I have very regular periods every 28 days. Husband and I are ttcing. I started my cycle on August 14 which lasted 4 days. Then right in the middle of ovulation August 29 cycle day 16 I start bleeding again. Im kinda shocked not sure whats going on.  <response>: Hello, I would be happy to help you with your question. What you are describing is actually quite normal. Mid-cycle, just beyond the surge in LH hormone and ovulation, there is a brief, abrupt Chat Doctor. This can be confusing, but in the setting of otherwise normal regular cycles, is the likely best explanation. Remember to take a pregnancy test to rule this out as well. I hope that this helps and good luck! 