I started birth control ( Norethindrone 0.35mg) at first i saw thin strands of red and pink in the viginal discharge but then it went to normal, I didn’t get my period on time now its 16 days late but I’ve been taking the birth control correctly and haven’t missed a pill. It feels like im gonna get it because i feel really little cramps now and then and my nips are sore but no period yet. And till now no signs of pregnancy!!!! Can someone help im concerned about this, is worrying.