Can I be pregnant even though I took a pregnancy test and it was negative? My periods are pretty irregular but I think I m roughly 2 weeks late. I have been feeling sick in the mornings and night for about a week now, My boobs are really really sore and tender and I get sharp shooting pains and they have got a little bigger, I have headaches and stomach cramps and my stomach feels harder if that makes sense. I ve had little backache as well. I did a test today and it came back negative, is it possible that the test could be wrong, or its too early for me to do a test? It sounds stupid but this isn t my period coming I know how my body works and this is more than a late period. Im 18 and never been pregnant before so I m so confused.