No period, negative test

I haven't had a period for almost 3 months. Ive taken tons of home test and they were all negative. I got a blood test done and the hCG level was a 1 mIU/ml so it was a negative. My doctor gave me medication to take for 10 days and it would make me start my period then i would start taking birth control. Im just wondering if i should take the pills or not because im still concerned if i am pregnant or not.