I had my last period on the 29th of April and finished may 5th. Then had my first ever sex on may 8th though there was no penetration as he was about to penetrate I told him to stop because I was scared. I don't know what type of sex that is called. No ejaculation either but not sure if there was precum. Out of fear I decided to use a morning after pill the next day that is may 10th. Suddenly may 15th she I a dark brown discharge then the next day I got her period. A little lighter than normal with few cramps. Then suddenly may 18th the period didn't come. What's going on? are these signs of pregnancy? Or what? I'm so scared.