Delayed Period & Potential Pregnancy: What to Do?

Question
i am 14 years old.the first day of my last menstrual period is 7th of february while first day of my second last period was 28th december which means my last period is late.i had sex on 4th of feb and also in mid january for three times .After 4thfebruary i had no sexual intercourse and after that my period started on 7th of february which lasted for seven days.On 6th feb i had pregnancy test which was negative.my worries are that i vomit once after 3 days of sex and i am also having head ache as well as backache although not too much.so please tell me what are my chances of getting pregnant?second question is that,why my second last period was so late? is it normal as two days before my delayed period i had test which was negative and also my period started and were normal(7days).so can i b pregnant.please answer all my questions.Thank u in advance for ur insight to my problem."


Answer
If you got your periood on February 7, you are not pregnant. You may merely have been late for your period, but if a pregnancy test taken after February 6 was negative, you are definitely not pregnant and you probably merely had some hormonal imbalance last month. Just keep a record of your bleeding next month and see when you get your next period. Once you start your period, you cannot be pregnant.