Hello, I am now officially 5 days late on my period had unprotected sex a month ago. And of course I am freaking out! I did take two pregnancy test and both came to be negative expect for the beginning on the second one. ( the second line faintly appeared and then disappeared after a minute so...) anyway, I have been having lower abdominal cramps. Can I still be pregnant and my hcg hormones are too low?