I HAD MY PERIOD 6/14 & IT ENDED 6/18...THEN AB0UT A WEEK LATER I SPOTTED FOR 12 DAYS...NOW THIS MONTH MY PERIOD CAME 7/20 & MY CRAMPS ARE WORSE THAN THEY'VE EVER BEEN BUT THEY'RE NOT STOMACH CRAMPS ITS MORE IN MY LOWER BACK...MY NIPPLES ARE SO TENDER...I'VE NEVER BEEN PREGNANT SO I DNT KNOW WHATS GOING ON HERE...