i  currently do not have CRAMPS ANY MORE OR EVEN signs to say that my period is coming usually my breast hurts or my back or maybe my belly but for the past 3 months now i have not been experiencing any of that , it just comes without any cramps is this normal i usually have serious back pains and cramps my period also  comes late it may start light  just spotting for about 3 days then takes it time and come down heavy with slot of blood clots. should i be too worried ?