My periodical time is near about first week of the months. I was physical about 45 days ago and I missed my period in this month. I was afraid that I am pregnant but I tested with two prega news test kit and the results were negative. I am feeling a strangeness in my body. A Bombting feeling and all the symptoms of period but not starting. Don't know what to do. I am greatly afraid. Please suggest me what to do.