Pregnancy Test Negative & Period Delay - Seeking Medical Advice

Question
I asked a question about a possible pregnancy just yesterday.  Thank you for replying so quickly.  I got up the courage to buy a pregnancy test, and it was negative.  I am now going to contact my gynocologist to see about why my period hasn't come.  Thanks a bunch.  Thanks for helping me and for helping others.  It is awfully nice of you to spend time helping young people like myself.  Keep up the good work.  

Answer
Hello again Justina, thanks for the kind words.  I wanted to let you know it is not uncommon for women to skip a period on average once a year.  Most Doctors do not consider it cause for concern unles you skip two in a row.
Stress, medicines, weight loss of gain, as well as illness are all things that can cause a missed or late period.
Good luck to you.