2o days before I had sex with my gf but bymistakly I put sperm into her l. We did not use condom .sperm directly entered into her. We check pregnancy test but it shows negative. But nw she is missing her periods .her period date was 17 but nw its 20 yet she did not got periods. So please tell us a necessary solutions for this. Plz.take this matter seriously please tell us some solutions. For getting periods what should do.