Late Period & Potential Pregnancy: Understanding Your Situation

Question
i am 14years old.first day of my  last manstural period was february 7 and it ended on 12th of feb.most importantly that period was late as first day of my second last period was 29th of december.i had intercourse before 5th of feb and throughout january and december.on 6th feb i did pregnancy test which turned out to be negative.after that i never had sex.now my questions are; 1)why my preiod was late and according to your calculation by how many days it was late,do i need to worry or will i get pregnant as i had no intercourse after 5th of febuary i-e 2 days before my periods. seconds question is that does continuing of periods although late by few days 100% rules out pregnancy. third and last question should i go for pregnancy test as now 15 days have passed since my last intercourse.please answer all my three questions as i am too much tense.thanks in advance for ur insight to my problem.

Answer
HI Aleena,
sorry for the delay. Actually first remember stress which you are having can be the biggest problems in throwing a period off. I would wait for the next one, also note when it comes on and off and if you have one or not and what kind of period. Are you on any type of birth control and were you when you had sex? I would then regardless of what kind of period you have do another pregnancy test just to see what it shows after this long of time. Let me know.