2 weeks ago I had sex for the first time in my life, he wore a condom and it didn't break. After sec I kept feeling nausea but it stopped after two days.yesterday, I felt like I started my period, I had cramps, headaches, tender breasts and definitely felt something down there which got me relieved but when I checked it was just mucus. i am really worried, I'm 15 and I live in a Muslim community and family so if my parents find out they're certainly going to kill me.