I think I'm pregnant..

I think I may be pregnant I just told my boyfriend. He is very supportive about it but problem is I'm 16 and scared I've had a lot of symptoms of early pregnancy but they longest I could be is about 4 weeks. I'm suppose too start soon but if I am I don't know how too tell my parents... So I need a little help too figure out what's going on the symptoms I've had is 
Nausea really badly
cramping.
Backaches.
Headaches.
Mood swings.
Dizziness.
Tender breasts.
Fatigue.
Food aversions 
Bloating.
I'm just really scared and don't know what too do please help me...