2 weeks sore nipples and nipple only and still negative. :(

Am I testing to early or something! I've done at least 4 test within the the time my nipples began hurting. I had sex a day after my period ended which was on the 18th of last month. A few days or week later my nipples began hurting so I'm like YES! THE NIPPLE PAINS OF PREGNANCY. Nooopppeee. Came out negative, all of them. My period isn't due till between the 15th- 18th of this month. Should I test on the day I'm suppose to start? Or just go to a doctors! The pain of nipples are dying down but I'm not sure if that's good.

IM SO FREAKING ANXIOUS TO KNOW YALL BUT DARN IT, IM SCARED TOo.