Hi, I had my last period on 10th March 2014, I was expecting one on 9th April, however it has not started yet (been 6 days). HPT is showing negative however when i did a ultra sound it says endometrium thickened - 14.6mm but nothing seen in the uterus (right ovary follicle 21.6mm), Are there chances that I am pregnant or is there anything that i need to be worried about? Not done a blood test yet, but if the blood test is negative then I am surely not pregnant right?