Hey, I've started my period like 3 days earlier than usual. I'm  a little itchy down there. Well when I first started my period there was white stuff in my blood, on my tampon. There still is white stuff on my tampons. In the beginning of my period it was very heavy the first 2 days and I'm on my 3rd day, but it just all of a sudden got lighter.  What going on with my body? My boyfriend suspects I'm pregnant, I'm 16... help me