Please i need good answerss !?

ok so i had unprotected sex with my fiance june 17 to the 28 everyday and yesterday i got light pink blood all day on june 29 but it came early then usual i have bad cramps and headaches ...i got my last period ( june 10 to the 16 ) and my cycle day is always 30 days and im supposed to get it ( july 10 ) but its getting a little heavier now but but the color darkish pink ... what does this mean help me please; and thank you *