I had protected sex 7 weeks ago and my period was due 4 days afterwards. My last period was the 6th-11th Dec 2012 and it was due 9th Jan 2013 but it never came. I've taken 3 home pregnancy tests and they all came back negative. I generally believe that I may be pregnant but if you believe that you're pregnant so much then can your body display all the pregnancy signs without actually being pregnant? I'm really worried... Could I be pregnant?