the thing is im 18 years old.i have a boyfriend and we have sex atleast 4-5 times a week.he doesnt use a condom.iam on the contraceptive pill i also had the depo injection in july.i still took my contraceptive pill after i had my depo because i was constantly bleeding the fing is from last week i missed 3 of my pills randomly not in a row.at this time me and my bf were still having sex and he ejaculated each time.i missed the latest pill 3 days ago.im really worried iv done a test but its negative but im not sure if did it to early.i feel sick constantly and not sure if its to do with it or not.please write back im in trouble and dont know whether i could be or not.help??? xxx