Good day I started preventing/family planning on may, and i was using a different pill brand,last month when i go to my doctor he told me he doesnt have pills and i asked for a prescription,i started using ovral pill, but i am suprised that i have already started with the red pills and i m left with only 3,and i havent seen my periods yet,my breast are swollen,i took 2 pregnancy tests and they all negative. Must i worry,what can be the problem?