My period is 3 weeks late, and I have taken test after test and not one of them have come up positive. I am normally fairly regular, maybe off a few days. I have been reading about it, and am learning that this is fairly common, and sometimes you just miss a period. But when I press lightly on my lower belly on the left I can feel a little ball and then a line extends about 3 inches. I feel the other side and I don't feel anything. I am extrememly bloated, I look like I am a month or so pregnant, but with my other two the test was positive before I was done peeing. I am just wondering if or when i should be concerned. Thank you for your help