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I think that I am pregnant. I have been gaining weight for the past couple of months, I still have my period but they are not normal but yet in still I have them. For a couple of months I was swelling high or as they say carrying high. Not only have I felt movement so have my co-workers. Now I have a dark line from my pelvic to my belly button and it has gotten darker and not only that a line has began to appear above my belly button and it is getting darker. My blood and urine test comes back negative but I am still getting bigger and everything is spreading. Is it possible that I am pregnant.