Signs to know ur starting ur period?!

ok!. so ive had my period for about 4 years now!. and im about to see my girlfriend on the 18th through the 20th!. and we r sexually active!. I started July 7th I ended my period July 12th!. and i havent started yet!. my breasts have been hurting for 2 days!.i have been cramping in the morning when i walk around!. when should i start!? i have seen my girlfriend in amonth so i want to have fun these 2 days =) so can anyone give me a day!? that i will start!?

thank you so muchWww@Answer-Health@Com

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