So my last "period" was the 18th of feb it was lighter and only lasted 3 days when I normally have 7 day periods that's really heavy the first 2-3 days, this month I was suppose to start on the 20th (says glow) but I still have not started? Anyone know what could be wrong? Please help idk what to do I'm 18 and idk if it's still possible to bleed while pregnant ??? I was always told if you bleed your not pregnant😕 I'm sorry if I sound stupid and uneducated I just never really looked into it