okay, so its sept. 24, im not supposed to get my period until oct.4-6 and today i woke up feeling menstrual cramps. i just ignored it and went about the morning like usual. Now when i just went to the bathroom there was a spot on my underwear that was real wet, milky looking white discharge, kinda thick but not stringy like glue, just like milk. Normally when me and my boyfriend have sex, when he pulls out its all over his penis toward the shaft. what is this signs of? dont have any infections or std's, already been checked.