K the first day I day I had my last period was Dec. 9th and it ended the 16th me and my boyfriend had sex on the Dec. 30th and my period is supposed to come today which it kind of did but it's a really light period its almost like spotting which makes me think it is because of the fact after I have sex like in the month I have really heavy periods and when I get my period I have really bad cramps either before my period starts or when it starts and I don't have any pain at all so what would you say this is pregnancy symptom or