I am a young teenager. I just had sex on June 12, 2014. It has been 5 days and I dont know if I am having menstrual symptoms or pregnancy symptoms.

Pregnancy. Doing a pregnancy test is the best way to figure that out. If your period is not oververdue, yet, wait til then. It is so easy to prevent this worrying; use condoms! They also prevent STIs. Be prepared. Buy your own. .