Okay girl !! So I had sex with my man then two days after started birth control I'm 3 days late on period, but I signed this spot on app w my pills & says I won't start my period till 8 days I took two pregnancy tests both say negative am I'm missing my period because I started birth control ? I've been cramping like period cramps but nothing help lol or should I just wait 8 days ? am I freaking myself out or what!! first time ever I missed my period by starting birth control so I'm nervous