my period was due around the 11th of this month so on 13th an 14th i did three tests all came out positive! faint line but could see them enough.this morning now being the 16th i had brown like blood that then turned bright red an is now a steady flow , i did a home test again an i could sort of see a line but not half as clear as the other test lines. my period is so different normally. please help! whats happening?