Just to warn you, we're not doctors, we can't diagnose you or really even give you much indication, and the teen pregnancy part of the forum is only for people who are DEFFINATLY pregnant.. so this thread might be closed.. and you'll be re-welcomed over here once you have a confirmed your pregnancy
but for now i'll answer, just so you know what to do..
Erm, i can't say ive had shooting pains personally, but if you've had unprotected sex, or protection has failed, then there's always a chance.. if you're only about a week chances are it probably wouldn't show up on a test yet - but you would have to get a test - and if it says negative test again in a week or so... or for better results wait to see if your period comes, if it does, then i highly doubt you're pregnant, however, if it doesn't then i'd say test..
or go and visit your doctor - because it could be a sign of something else.. it could be soemthing as simple as a kidney infection - but your doctor would be able to tell you best..
hope that helped.. and didn't mean to seem rude at the begining - just thought i'd prewarn you.. we're all lovely here, if you do get a positive, and i'd hate to feel like i'd made you feel unwelcome!!

hope you get what you're looking for..