Help! Unusual period!?

If you had implantation bleeding on December 9th a test would def show positive at this point.It could have been implant spotting or it could have just been a funky period which all women get from time to time.If you ovulated on November 21st however I don't think you had implant bleeding on December 9th as that would be really late for the egg to be implanting.Sometimes if you don't ovulate that month (common once in awhile) you can skip a period or have a very spotty flow.Wait a few days and take a test.Good luck.