What should i do

So last night around 11:45 I call my boyfriend ( don't live together /last time seen was in January ) and and he would not pick up his phone so I divided to blow up his phone with callas and text . and all of a sudden on the 18 call a girl answers the phone and their was a bunch of laughing in the back ground so all I did was hand up . I wanted to talk major shit to her . but my parents do not approve of him and they don't now I'm dating him . I'm falling back in my depression so bad now . back 7 months ago I had a miscarage ( yes his baby ) . and for some reasons I can't let go of him . I am a junior in high school please help me . I don't know what to do .