I may be pregnant....but the test says negative....? Okay, I took a pregnancy test, and it says negative, but I am still worried, I haven't had a period since January and its March, I did have sex 2X once exactly 2 weeks before my period and once 1 week before my period, I took a test at an emergency room 3 days after my last incounter, and started my period that week. It was negative, but I think it was too soon, then, I took one recently, and it was negative...I'm starting to feel sick, not nauseous, just hurting stomach, and I did have ALOT of stress just recently, so I'm confused on what exactly may be causing my LONG delay, I'm only 17 and cannot handle a child w/ the situation I am in, but if I am pregnant...then I'll step up. I just want to know if there is a chance BOTH of those tests could be wrong, or if even one could, because I believe that the first one was too early! Someone's advice would be greatly appreciated!

Summarized question: What is the chance of being pregnant after getting a negative pregnancy test?