Had sex few days after my period was over [without condom] and after that I started having brown discharge then few days after it start bleeding. My stomach started to hurts. Haven't been to a doctor yet. I'm 19. I'm so scared! Does someone have an idea what's wrong?

Is this the 1st time you had sex?

When I was your age, I has a brown discharge for 5-6 days and cramps too. If this was your 1st time, I think there is nothing to worry. Wait for your next periods. It mite be delayed by a few days. If it doesn't appear for more than 10 days after your date, take a HPT.