Taking a hpt is not as accurate as going to your doctor and getting a blood test done. I would advise that you go have one done. They are the most accurate and your levels of pregnancy hormone in your blood will increase every day of pregnancy. If you're a week late there shouldn't be a problem having it picked up on the test.
As for the both of you, without judgement, may I also recommend that if you are scared about being pregnant, still in school, not married, and do not feel like you are ready to be a mother, then you should not be engaging in sex with your boyfriends. Whether protected or unprotected, you could become pregnant.
All these young ladies who have responded to you have given you a correct short term advice. Additionally however, if you are not pregnant, I am going to give you a realistic long term solution. Abstain from having sex until you are in a committed marriage where a pregnancy would be more likely welcomed and supported. It is part of the marital bond, to procreate.
Your fears of being pregnant are not by accident. Your concsience is telling you that something is not right about what has happened. It could also be affecting your system, therefore your late for your period to start. Relieve yourself of wondering and get the blood test done, and then go from there. Let us know how we can help you if you are pregnant, but please don't resort to abortion if it's positive. We can help guide you at that point.
If it's negative, then you can make a change in your life immediately at that point and stop having sex. You may not have gotten pregnant this time, but it's only a matter of time before you will.
God bless,
myangelsinheaven