I had intercourse last October 12. and that time im fertile. Last October 23 i got light period for 3 days. Then this month my menstruation arrive last november 20 until 24 and i had light period again. during this month i had all the symptoms of being pregnant.. I had nausea, headache, sore boobs having some cramps in my stomach... I had PT this morning and i got Negative. Anyone can help me what s the meaning of this?