im 18 iv always been very late with my period but the past few months iv been getting them 2days after ive been due. last month i got them 2days early but exsperienced a really odd period that ive never had before , it stopped and started for 5days. took a test it was negative. i got my AF the 17th sept and am due 14th this month .. i have had unprotected sex on the 21st,22nd,23rd,27th,28th,29th,and 30th of september and this month October i have had unprotected sex on the 3rd ,. i am 10 days away of being due my period but about 2days ago ive been exsperiency period pain like its about to come , and cramping .. and sharp pains the odd time on my sides in my abdomen ... when i press down on my stomach its quite tender my breasts are a Little tender also . i did have Alot of discharge this month but now there seems to be none just feels like im going to get my period .. could i be pregnant?