Sometimes what you experience leads you to think it is the symptoms of preggo. All women are different. You don't want this going haywire, so I highly suggest you visit your OB/Gyno. This is a very traumatic issue, especially if your parents are conservative. Therefore...SEE THE DOCTOR! PLEASE! If you keep repeating ''what if", it will not do you any good, nor will it quicken the result.
Being 16 is tough in general. Lord knows how old your BF is. Concider this you life trial. Think before having sex, from now on. Use some kind of birth control. Better yet, DON'T have sex right now---which is hard because we all know teens are way ahead, growing up way too fast. But DO keep in mind that you are 16. Imagine if are really preggo, God forbid, what will you do? Work and go to school? Have your parents take care of your infant? Will your man acceptingly and sincerely participate in parenthood? Concider these questions.
Ok....basically, just go see a doctor. that is the best way to really find out. OOORRR, what you CAN do, without having to visit the doctor if you're afraid that your parents will find out through medical information, is buy several preggo-tests. Buy 3 or 4 or 5 since they're not ONE HUNDRED percent accurate. It's better to see the outcome from different kinds of preggo-tests. If you're still unsure about this, THEN visit the doctor. Your parents will find out. Can't hide a bulgey tummy.
Hope all goes well and that you're NOT preggo.